v.衰退
Merriam-Webster Online Dictionary
decay (verb)intransitive verb
1.
to decline from a sound or prosperous condition
2.
to decrease usually gradually in size, quantity, activity, or force
3.
to fall into ruin
4.
to decline in health, strength, or vigor
5.
transitive verb
to undergo decomposition - decaying fruit
1.
obsolete to cause to decay - impair infirmity that decays the wise Shakespeare
2.
to destroy by decomposition
1.
gradual decline in strength, soundness, or prosperity or in degree of excellence or perfection
2.
a wasting or wearing away - ruin
3.
obsolete - destruction death
4.
a) - rot , specifically aerobic decomposition of proteins chiefly by bacteria
b) the product of decay
5.
a decline in health or vigor
6.
decrease in quantity, activity, or force as
a) spontaneous decrease in the number of radioactive atoms in radioactive material
b) spontaneous disintegration (as of an atom or a particle)
Merriam-Webster Online Thesaurus
decay (noun)1.
a gradual sinking and wasting away of mind or body
SYNONYMS:
debilitation, decay, decaying, declension, degeneration, descent, deterioration, ebbing, enfeeblement, weakeningRELATED WORDS:
atrophy; exhaustion; drooping, flagging, limping; regression, relapse, setbackNEAR ANTONYMS:
invigoration, strengthening; progress; rejuvenation, rejuvenescence2.
the process by which dead organic matter separates into simpler substances
SYNONYMS:
breakdown, decay, decomposition, festering, putrefaction, putrescence, rot, spoilageRELATED WORDS:
crumbling, disintegration, dissolution; curdling, fermentation, moldering, souringNEAR ANTONYMS:
growth, maturation, ripening1.
to go through decomposition
SYNONYMS:
break down, corrupt, decompose, disintegrate, fester, foul, mold, molder, perish, putrefy, rot, spoilRELATED WORDS:
sour, turn, turn off []; contaminate, defile, pollute, taint; addle, curdle, ferment; mortify; rust; crumble, decline, degenerate, descend, deteriorate, dilapidate, sink, witherNEAR ANTONYMS:
age, develop, grow, mature, ripen; refresh, renew, restore; cleanse, purify; assemble, compose, integrate; ameliorate, better, improve, meliorate2.
to become worse or of less value
SYNONYMS:
atrophy, crumble, decay, decline, degenerate, descend, devolve, ebb, regress, retrograde, rot, sink, worsenRELATED WORDS:
abate, de-escalate, diminish, downsize, dwindle, recede, wane; break down, corrupt, decompose, degrade, dilapidate, disintegrate, molder, putrefy; sour, spoil; lessen, lower, reduce; debilitate, undermine; droop, fail, fall, flag, lag, languish, run down, sag, slip, waste (away), weaken, wiltNEAR ANTONYMS:
better, upgrade; enhance, enrich, fortify, heighten, intensify, strengthen; advance, develop, march, proceed, progress3.
to lose bodily strength or vigor
SYNONYMS:
decay, droop, emaciate, fade, fail, flag, go, lag, languish, sag, sink, waste (away), wilt, witherRELATED WORDS:
break down, wear out; yield; degenerate, deteriorate, rot, run downNEAR ANTONYMS:
convalesce, rally, rebound, recover, recuperate; gain