衰 ⇒
衰 cuī/shuāi, mourning garments, to decline/to wane/to become weak or feeble
衰竭 shuāijié, organ failure/exhaustion/prostration (medicine)
衰老 shuāilǎo, to age/to deteriorate with age/old and weak
衰退 shuāituì, to decline/to fall/to drop/to falter/a decline/recession (in economics)
衰落 shuāiluò, to fall/to drop/to decline/to deteriorate/to go downhill
衰弱 shuāiruò, weak/feeble
肾衰竭 衰败 shuāibài, [衰敗], to decline/to wane/to decay/to deteriorate
心力衰竭 xīnlìshuāijié, heart failure
衰减 shuāijiǎn, [衰減], to weaken/to attenuate
早衰 zǎoshuāi, to age prematurely/premature senescence
衰亡 shuāiwáng, to decline/to die out/decline and fall
神经衰弱 shénjīngshuāiruò, [神經衰弱], (euphemism) mental illness/psychasthenia
长盛不衰 衰变 shuāibiàn, [衰變], radioactive decay
经久不衰 jīngjiǔbùshuāi, [經久不衰], unfailing/never-ending
不衰 bùshuāi, unfailing/never weakening/enduring/unstoppable
兴衰 xīngshuāi, [興衰], prosperity and decline (of a kingdom)/rise and fall
衰微 shuāiwēi, to decline/to wane/weakened/enfeebled/in decline
半衰期 bànshuāiqī, half-life
未老先衰 wèilǎoxiānshuāi, to age prematurely
颓 ⇒
颓废 tuífèi, [頹廢], decadent/dispirited/depressed/dejected
颓 tuí, [穨]/[頹]/[頽], variant of 頹|颓[tuí], to crumble/to collapse/to decline/to decay/decadent/dejecte...
颓丧 tuísàng, [頹喪], dejected/disheartened/listless
颓势 tuíshì, [頹勢], decline (in fortune)