This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
Dealing - trade, practice, traffic, commerce.
Dearth - famine, need, scarcity, want.
Debar - deter, hinder, prevent, exclude, preclude.
Debase - lower, degrade, humble, disgrace.
Debate - argue, wrangle, dispute, controvert, contest.
Debilitate - impair, weaken, enervate, enfeeble.
Debility - infirmity, weakness, incapacity, imbecility, feebleness.
Decay - decline, consumption.
Decease - demise, death, departure of life.
Deceit - fraud, duplicity, deception, cunning, artifice, trickery, guilt.
Decent - comely, fit, seemly, becoming.
Decide - settle, resolve, fix, determine.
Decision - sentence, determination, judgment, resolution, conclusion.
Decisive - conclusive, convincing, ending.
Declare - announce, pronounce, testify, proclaim, assure, assert, affirm.
Decline - droop, decay, shun, reject, repel, sink, refuse.
Decorate - embellish, ornament, beautify, adorn.
Decoy - allure, tempt, seduce, entice, inveigle.
Decrease - lessen, diminish, subside, lower, abate.
Dedicate - devote, consecrate, set apart.
Deduction - abatement, inference, conclusion.
Deed - action, exploit, achievement, feat.
Deface - mar, disfigure, destroy, mutilate.
Defame - slander, vilify, scandalize, calumniate.
Defeat - beat, baffle, conquer, overcome, overthrow, vanquish, frustrate.
Defect - want, flaw, blemish, imperfection.
Defective - wanting, imperfect, deficient.
Defender - protector, advocate, pleader, vindicator.
Defense - apology, excuse, justification, protection, vindication.
Defer - delay, hinder, prolong, retard, postpone, protract, procrastinate.
Deference - respect, regard, condescension, submission, veneration.
Deficient - lacking, wanting, Imperfect.
Defile - taint, poison, vitiate, corrupt, contaminate, pollute.
Definite - exact, precise, positive, certain, bounded, limited.
Defraud - swindle, cheat, rob, deceive, trick.
Degrade - lower, disgrace, lessen, reduce, decry, depreciate, disparage.
Degree - rank, position, station, class, order.
Dejection - depression, lowliness, melancholy.
Delay - hinder, defer, detain, prolong, protract, postpone.
Deliberate - slow, hesitating, considerate, thoughtful, cautious.
Delicate - frail, fine, nice, weak, tender, beautiful, elegant, dainty.
Delighted - pleased, glad, grateful, joyful.
Delineate - describe, draw, paint, sketch, depict, represent.
Delinquent - criminal, offender.
Deliver - give up, save, yield, utter, surrender, concede, rescue, transmit.
Delude - mislead, deceive, cheat, beguile.
Delusion - cheat, illusion, deception, fallacy.
Demand - claim, require, ask.
Demolish - overthrow, destroy.
Demonstrate - illustrate, show, prove, manifest.
Denote - imply, signify, mark, betoken.
Deny - refuse, disown, contradict, oppose.
Departure - leaving, forsaking, going away, abandoning, exit.
Dependence - trust, reliance, confidence, connection.
Deplore - bemoan, bewail, mourn, lament.
Deportment - behavior, conduct, character, carriage, demeanor.
Depraved - degraded, corrupt, abandoned, profligate, wicked, vicious.
Deprecate - underrate, disparage, detract, undervalue, degrade, traduce, lower.
Deprive - prevent, hinder, depose, divest, strip, abridge.
Depute - authorize, appoint, constitute.
Deputy - agent, substitute, repre-sentative, delegate.
Derange - disarrange, discompose, disorder, confuse, disconcert.
Deride - mock, ridicule, make fun of, banter, laugh at.
Describe - illustrate, narrate, delineate, recount, relate, represent.
Design - intend, plan, scheme, purpose, project, sketch.
Designate - name, show, point out, indicate, choose, distinguish, style.
Desist - stop, leave off, cease, discontinue.
Desperate - desponding, hopeless, mad, careless, furious, regardless.
Despicable - mean, vile, pitiful, worthless, outrageous, contemptible.
Despise - hate, scorn, loathe.
Despotic - arbitrary, self-willed, absolute.
Destination - point, location, lot, design, fate, purpose, appointment.
Destitute - bare, forlorn, poor, scanty, forsaken, needy.
Destroy - ruin, waste, demolish, consume, annihilate, dismantle.
Desultory - hasty, slight, loose, roving.
Detach - sever, separate, disjoin, divide.
Detail - account, tale, description, narration, recital.
Detain - keep, restrain. confine, hold.
Detect - find, discover, convict. Determine - fix, decide, bound, limit, settle, resolve, adjust.
Determined - firm, resolute, decided, fixed, concluded, ended, immovable.
Detest - hate, loathe, abominate, abhor. Detestable - hateful, loathsome, abominable, execrable.
Detract - defame, degrade, vilify, slander, calumniate, scandalize, derogate.
Detriment - inconvenience, loss, injury, disadvantage, damage, hurt, prejudice.
Develop - grow, unravel, clear, unfold, disclose, exhibit.
Deviate - stray, wander, err, digress, swerve.
Device - design, scheme, show, plan, contrivance, stratagem, invention.
Devote - give, apply, consecrate, set apart, dedicate.
Devout - pious, holy, religious, prayerful.
Dexterity - adroitness, ability, expertness, aptness, skillfulness, skill, tact.
Dialect - language, speech, tongue.
Dictate - propose, direct, order, prescribe, instruct, suggest.
Die - expire, depart, perish, languish, wither.
Differ - dispute, dissent, contend, vary, disagree.
Different - unlike, various, diverse.
Difficult - trying, arduous, hard, troublesome.
Difficulty - obstacle, obstruction, embarrassment, trouble, perplexity, trial, impediment.