| 1401 | deciduous | falling off or shed at a particular season, point of growth |
| 1402 | decimal | pertaining to or proceeding by tenths or the power of ten |
| 1403 | decimate | to kill, destroy, or remove large percentages of |
| 1404 | decipher | to succeed in understanding or interpreting |
| 1405 | decisive | settling an issue, producing a definite result |
| 1406 | declamation | rhetorical delivery, loud speaking in public |
| 1407 | declamatory | bombastic, ostentatiously lofty in style |
| 1408 | declarative | a statement in the form of a formal announcement |
| 1409 | declension | the inflection of a part of speech, such as case and number |
| 1410 | decorate | to furnish with ornaments |
| 1411 | decorous | in keeping with good taste and propriety |
| 1412 | decorum | appropriate social behavior, propriety |
| 1413 | decoy | a person who entices or lures another person or thing |
| 1414 | decrepit | weakened or worn out from age or wear |
| 1415 | decry | to publicly denounce, to condemn |
| 1416 | dedication | the quality of being committed to a task or purpose |
| 1417 | deduce | to reach a conclusion from something known or assumed |
| 1418 | deface | to damage something in a visible or conspicuous manner |
| 1419 | defalcate | to misappropriate funds, to embezzle |
| 1420 | defamation | act of injuring another's reputation by slander or libel |
| 1421 | defamatory | damaging to someone's reputation, especially if untrue |
| 1422 | defame | to try to diminish the reputation of |
| 1423 | defendant | a person or group against whom a charge is brought in court |
| 1424 | defensible | capable of being defended against armed attack |
| 1425 | defensive | used or intended to defend or protect |
| 1426 | defer | to delay, or put off to a future time |
| 1427 | deference | humble submission and respect |
| 1428 | deferential | respectful, reverential |
| 1429 | defiance | open resistance, bold disobedience |
| 1430 | defiant | showing open resistance, provocative |
| 1431 | deficiency | inadequacy or incompleteness |
| 1432 | deficient | lacking something essential, often construed with in |
| 1433 | defile | to make impure, to make dirty |
| 1434 | definite | having distinct limits |
| 1435 | definitive | explicitly defined |
| 1436 | deflect | to make (something) deviate from its original path |
| 1437 | defoliate | to remove foliage from one or more plants |
| 1438 | deforest | to destroy or to fell all the trees of a forest |
| 1439 | deform | to remove the form of |
| 1440 | deformity | a misshapen part, esp. of the body |
| 1441 | defraud | to obtain money or property by fraud, to swindle |
| 1442 | defray | to spend (money) |
| 1443 | deft | quick and neat in action, skillful |
| 1444 | defunct | no longer existing or functioning |
| 1445 | defuse | to reduce the danger or tension in (a difficult situation) |
| 1446 | degeneracy | the state of being physically or morally deteriorated |
| 1447 | degenerate | having fallen below a desirable level, especially morally |
| 1448 | degradation | a lowering from one's standing in office or society |
| 1449 | degrade | to lower in value or social position |
| 1450 | dehydrate | to lose or remove water, to dry |
| 1451 | deify | to make a god of (something or someone) |
| 1452 | deign | to condescend, to accept as appropriate to one's dignity |
| 1453 | deist | someone who believes in the existence of a supreme being |
| 1454 | deity | a god or goddess, divine status |
| 1455 | deject | make sad or dispirited |
| 1456 | dejection | a state of melancholy or depression, low spirits, the blues |
| 1457 | delectable | pleasing to the taste, delicious |
| 1458 | delectation | great pleasure, delight |
| 1459 | delegate | to entrust (a task or responsibility) |
| 1460 | deleterious | causing harm or damage |
| 1461 | deliberate | to consider carefully |
| 1462 | delicacy | the quality of being delicate |
| 1463 | delineate | to describe or portray (something) precisely |
| 1464 | delineation | a precise description |
| 1465 | deliquesce | to melt and disappear |
| 1466 | delirious | in a state of wild excitement or ecstasy |
| 1467 | delirium | an acutely disturbed state of mind that occurs in fever |
| 1468 | delude | to deceive someone into believing something which is false |
| 1469 | deluge | to flood with water |
| 1470 | delusion | a false belief that is resistant to confrontation with fact |
| 1471 | demagnetize | to remove the magnetic propreties of something |
| 1472 | demagogue | a leader who espouses the cause of the common people |
| 1473 | demarcation | the act of marking off a boundary or setting a limit |
| 1474 | demean | to debase, to do something that is beneath one's dignity |
| 1475 | demeanor | a person's conduct or behaviour |
| 1476 | demented | insane or mentally ill |
| 1477 | demerit | a quality of being inadequate, a fault, a disadvantage |
| 1478 | demise | a person's death |
| 1479 | demobilize | to release someone from military duty |
| 1480 | demolish | to destroy, to full or knock down (a building) |
| 1481 | demonstrable | clearly apparent or capable of being logically proved |
| 1482 | demonstrate | clearly show the truth of (something) through proof |
| 1483 | demonstrative | that serves to demonstrate, show or prove |
| 1484 | demonstrator | a person who takes part in a public protest meeting or march |
| 1485 | demote | to lower the rank or status of something |
| 1486 | demulcent | soothing or softening |
| 1487 | demur | to raise doubts or objections or show reluctance |
| 1488 | demure | reserved, modest, and shy |
| 1489 | demurrage | the delaying in port of a ship beyond the time allowed |
| 1490 | dendroid | (of an organism or structure) tree-shaped, branching |
| 1491 | dendrology | the study of trees and other woody plants |
| 1492 | denigrate | to criticize unfairly, to disparage |
| 1493 | denizen | to grant rights of citizenship to, to naturalize |
| 1494 | denominate | to call, to name |
| 1495 | denomination | the act of naming or designating |
| 1496 | denominator | the expression written below the line in a fraction |
| 1497 | denote | to indicate, to mark |
| 1498 | denouement | the final part of a play, movie, or narrative |
| 1499 | denounce | to publicly declare to be wrong or evil |
| 1500 | dentifrice | toothpaste or any other substance for cleaning the teeth |
| 1501 | denude | to divest of all covering, to make bare or naked, to strip |
| 1502 | denunciation | proclamation, announcement, a publishing |
| 1503 | deplete | to decrease seriously or exhaust the supply of (something) |
| 1504 | deplorable | deserving strong condemnation, shockingly bad |
| 1505 | deplore | to bewail, to weep bitterly over, to feel sorrow for |
| 1506 | deploy | to arrange (usually a military unit or units) for use |
| 1507 | deponent | (Greek Grammar) having passive form but an active meaning |
| 1508 | depopulate | to reduce the population of a region |
| 1509 | deport | to expel someone from a country |
| 1510 | deportment | a person's behavior or manners |
| 1511 | deposition | the process of giving sworn evidence |
| 1512 | depositor | a person who makes a deposit, especially of money in a bank |
| 1513 | depository | a place where something is deposited for safekeeping |
| 1514 | deprave | to make morally bad or evil |
| 1515 | depravity | moral corruption |
| 1516 | deprecate | to belittle or express disapproval of |
| 1517 | depreciate | to reduce in value over time |
| 1518 | depreciation | reduction in value over time |
| 1519 | depredation | the act of preying upon or plundering |
| 1520 | depress | to press down on |
| 1521 | depth | the vertical distance below a surface |
| 1522 | deracinate | to pull up by the roots, to uproot, to extirpate |
| 1523 | derelict | abandoned, forsaken, dilapidated, neglected |
| 1524 | dereliction | willful neglect of one's duty |
| 1525 | deride | to harshly mock, ridicule |
| 1526 | derisible | subject to or deserving of contemptuous ridicule |
| 1527 | derision | mockery, taunt |
| 1528 | derivation | the source from which something is derived, origin |
| 1529 | derivative | imitative of the work of someone else |
| 1530 | derive | to deduce (a conclusion) by reasoning |
| 1531 | dermatology | the medical study of skin |
| 1532 | derogatory | showing a degrading or disrespectful attitude |
| 1533 | derrick | a crane with a movable pivoted arm for moving heavy objects |
| 1534 | derring-do | valiant deeds in desperate times |
| 1535 | descendant | descending from a biological ancestor |
| 1536 | descent | an action of moving downward, dropping, falling |
| 1537 | descry | to see by looking carefully |
| 1538 | desecrate | to profane or violate the sacredness/sanctity of something |
| 1539 | desecration | an act of disrespect towards something considered sacred |
| 1540 | desert | to leave, to abandon, to forsake |
| 1541 | desiccant | causing dryness |
| 1542 | desiccate | lacking interest, passion, or energy |
| 1543 | designate | to mark out and make known, indicate |
| 1544 | desist | to cease to proceed or act, to stop |
| 1545 | desistance | the act or state of desisting, cessation |
| 1546 | desolate | barren or laid waste |
| 1547 | despair | to give up as beyond hope or expectation, to despair of |
| 1548 | desperado | a bold outlaw, especially one from the southern wild west |
| 1549 | desperate | being filled with, or in a state of despair, hopeless |
| 1550 | despicable | fit or deserving to be despised, contemptible |
| 1551 | despite | in spite of |
| 1552 | despond | to give up the will, courage, or spirit |
| 1553 | despondent | in low spirits from loss of hope or courage |
| 1554 | despot | a ruler with absolute power who exercise it cruelly |
| 1555 | despotic | characteristic of an absolute ruler or absolute rule |
| 1556 | despotism | an absolute or autocratic government |
| 1557 | destitute | without the basic necessities of life |
| 1558 | destitution | the action of deserting or abandoning |
| 1559 | desuetude | disuse, obsolescence |
| 1560 | desultory | lacking a plan, purpose, or enthusiasm |
| 1561 | deter | to prevent something from happening |
| 1562 | deteriorate | to make worse, to make inferior in quality or value |
| 1563 | determinate | having exact and discernible limits or form |
| 1564 | determination | firmness of purpose, resoluteness |
| 1565 | deterrent | a thing that is intended to discourage someone from some act |
| 1566 | detest | to dislike intensely |
| 1567 | detonate | to explode or cause to explode |
| 1568 | detract | to take away, to withdraw or remove |
| 1569 | detraction | the act of taking away |
| 1570 | detriment | the state if being harmed or damaged |
| 1571 | detrimental | tending to cause harm |
| 1572 | detritus | waste or debris of any kind |
| 1573 | detrude | to push downwards with force |
| 1574 | detumescence | the process of subsiding from a state of tension |
| 1575 | devastate | to destroy or ruin (something) |
| 1576 | develop | to grow or cause to grow and become more mature |
| 1577 | deviance | the state of departing from usual or accepted standards |
| 1578 | deviate | to go off course from, to change course, to change plans |
| 1579 | devilry | wicked activity |
| 1580 | deviltry | extreme cruelty |
| 1581 | devious | showing skillful use of underhanded tactics to achieve goals |
| 1582 | devise | to use one's intellect to plan or design (something) |
| 1583 | devitalize | to deprive of vitality, make lifeless, weaken |
| 1584 | devoid | empty, having none of, completely without |
| 1585 | devour | to eat (food or prey) hungrily or quickly |
| 1586 | devout | devoted to religion or to religious feelings and duties |
| 1587 | dexterity | skill in performing tasks, especially with the hands |
| 1588 | dexterous | skillful with one's hands |
| 1589 | diabolic | showing wickedness typical of a devil |
| 1590 | diacritical | capable of distinguishing or of making a distinction |
| 1591 | diagnose | to determine the root cause of (a disease) |
| 1592 | diagnosis | the identification of the nature and cause of an illness |
| 1593 | dialect | a socially or geographically distinct variant of a language |
| 1594 | dialectical | the art of investigating or discussing the truth of opinions |
| 1595 | dialectician | a person skilled in philosophical debate |
| 1596 | dialogue | a conversation between two or more persons |
| 1597 | diaphanous | light, delicate, and translucent |
| 1598 | diatomic | consisting of two atoms |
| 1599 | diatribe | a forceful and bitter verbal attack |
| 1600 | dichotomy | a cutting in two, a division |