1.  depreciation(n = noun.act) - a decrease in price or value; "depreciation of the dollar against the yen"
is a kind of decrease, diminution, reduction, step-down
Antonym: appreciation
Derived forms verb depreciate₃, verb depreciate₂

2.  depreciation(n = noun.possession) wear and tear - decrease in value of an asset due to obsolescence or use;
is a kind of non-cash expense, financial loss
has particulars: straight-line method, straight-line method of depreciation, write-down, write-off
Derived forms verb depreciate₃, verb depreciate₂

3.  depreciation(n = noun.communication) derogation, disparagement - a communication that belittles somebody or something;
is a kind of discourtesy, disrespect
has particulars: cold water, belittling, denigration, aspersion, slur, detraction, petty criticism, sour grapes, condescension, disdain, patronage, calumniation, calumny, defamation, hatchet job, obloquy, traducement
Derived form verb depreciate₁

depreciation, n.
1 the amount of wear and tear (of a property etc.) for which a reduction may be made in a valuation, an estimate, or a balance sheet.
2 Econ. a decrease in the value of a currency.
3 the act or an instance of depreciating; belittlement.

N  nonincrease, decrease, decrease, diminution, lessening, subtraction, reduction, abatement, declension, shrinking (contraction, ), coarctation, abridgment, extenuation, subsidence, wane, ebb, decline, ebbing, descent, decrement, reflux, depreciation, deterioration, anticlimax, mitigation, unincreased, decreased, decreasing, on the wane, a gilded halo hovering round decay, fine by degrees and beautifully less.

N  discount, abatement, concession, reduction, depreciation, allowance, qualification, set-off, drawback, poundage, agio, percentage, rebate, rebatement, backwardation, contango, salvage, tare and tret, sale, bargain, half price, price war, wholesale, wholesale price, dealer's price, trade price, coupon, discount coupon, cents-off coupon, store coupon, manufacturer's coupon, double coupon discount, triple coupon discount, discounting, at a discount, below par, at wholesale, have a friend in the business.

N  cheapness, low price, depreciation, bargain, good penny worth, snap, gratuity, free quarters, free seats, free admission, pass, free pass, free warren, give-away, freebee, run of one's teeth, nominal price, peppercorn rent, labor of love, drug in the market, deadhead, cheap, low, low priced, moderate, reasonable, inexpensive, unexpensive, well worth the money, worth the money, magnifique et pas cher, good at the price, cheap at the price, dirt cheap, dog cheap, cheap, cheap as dirt, cheap and nasty, catchpenny, discounted, half-price, depreciated, unsalable, gratuitous, gratis, free, for nothing, costless, expenseless, without charge, not charged, untaxed, scotfree, shotfree, rent-free, free of cost, free of expense, honorary, unbought, unpaid, for a mere song, for a song, at cost, at cost price, at prime cost, at a reduction, a bon marche.

N  disapprobation, disapproval, improbation, disesteem, disvaluation, displacency, odium, dislike, dispraise, discommendation, blame, censure, obloquy, detraction, disparagement, depreciation, denunciation, condemnation, ostracism, black list, animadversion, reflection, stricture, objection, exception, criticism, sardonic grin, sardonic laugh, sarcasm, insinuation, innuendo, bad compliment, poor compliment, left-handed compliment, satire, sneer, taunt, cavil, carping, censoriousness, hypercriticism, reprehension, remonstrance, expostulation, reproof, reprobation, admonition, increpation, reproach, rebuke, reprimand, castigation, jobation, lecture, curtain lecture, blow up, wigging, dressing, rating, scolding, trimming, correction, set down, rap on the knuckles, coup de bec, rebuff, slap, slap on the face, home thrust, hit, frown, scowl, black look, diatribe, jeremiad, jeremiade, tirade, philippic, clamor, outcry, hue and cry, hiss, hissing, sibilance, sibilation, catcall, execration, chiding, upbraiding, exprobation, abuse, vituperation, invective, objurgation, contumely, hard words, cutting words, bitter words, evil-speaking, bad language, personality, disapproving, scandalized, disparaging, condemnatory, damnatory, denunciatory, reproachful, abusive, objurgatory, clamorous, vituperative, defamatory, satirical, sarcastic, sardonic, cynical, dry, sharp, cutting, biting, severe, withering, trenchant, hard upon, censorious, critical, captious, carping, hypercritical, fastidious, sparing of praise, grudging praise, disapproved, chid, in bad odor, blown upon, unapproved, unblest, at a discount, exploded, weighed in the balance and found wanting, blameworthy, reprehensible, to blame, worthy of blame, answerable, uncommendable, exceptionable, not to be thought of, bad, vicious, unlamented, unbewailed, unpitied, with a wry face, reproachfully, Int, it is too bad!, it won't do, it will never do!, marry come up!, Oh!, come!, 'sdeath!, forbid it Heaven!, God forbid, Heaven forbid!, out upon, fie upon it!, away with!, tut!, O tempora!, O mores!, shame!, fie, fie for shame!, out on you!, tell it not in Gath!.

N  detraction, disparagement, depreciation, vilification, obloquy, scurrility, scandal, defamation, aspersion, traducement, slander, calumny, obtrectation, evil-speaking, backbiting, scandalum magnatum, personality, libel, lampoon, skit, pasquinade, chronique scandaleuse, roorback, sarcasm, cynicism, criticism (disapprobation), invective, envenomed tongue, spretae injuria formae, personality, libel, lampoon, skit, pasquinade, chronique scandaleuse, roorback, detractor, detracting, defamatory, detractory, derogatory, deprecatory, catty, disparaging, libelous, scurrile, scurrilous, abusive, foul- spoken, foul-tongued, foul-mouthed, slanderous, calumnious, calumniatory, sarcastic, sardonic, sarcastic, satirical, cynical, critical, damn with faint praise, assent with civil leer, and without sneering, teach the rest to sneer, another lie nailed to the counter, cut men's throats with whisperings, foul whisperings are abroad, soft-buzzing slander, virtue itself 'scapes not calumnious strokes.

N  underestimation, depreciation, pessimism, pessimist, undervaluing, modesty, depreciating, depreciated, unvalued, unprized.

depreciation allowance, depreciation charge, depreciation rate, earnings before interest taxes depreciation and am, rate of depreciation, straight-line method of depreciation