Question

wane v.减少，衰微 wane (v.) Old English wanian "make or become smaller gradually, diminish, decline, fade," from Proto-Germanic *wanen (cognates: Old Saxon wanon, Old Norse vana, Old Frisian wania, Middle Dutch waenen, Old High German wanon "to wane, to grow less"), from *wano- "lacking," from PIE *we-no-, from root *eue- "to leave, abandon, give out" (see vain). Related: Waned; waning; wanes. 【记】同源于vain 徒然的, 无益的；音：微, 微弱,微音，声音减弱，衰微；音：乌云，乌云遮挡了月亮太阳造成月亏

Accepted Answer

[wein] 【英】 v.减少，衰微(to decrease in size, extent, or degree; dwindle)【例】 The moon wanes after it has become full. vi. (名声)衰落; 月亏【记】拼: 万恶(淫为首)－名声衰落【反】intensify(vt 加强)

单词	wane
音标	[wein]
解释	v.减少，衰微
红宝书	【英】 v.减少，衰微(to decrease in size, extent, or degree; dwindle) 【例】 The moon wanes after it has become full.
字源	wane (v.) Old English wanian "make or become smaller gradually, diminish, decline, fade," from Proto-Germanic wanen (cognates: Old Saxon wanon, Old Norse vana, Old Frisian wania, Middle Dutch waenen, Old High German wanon "to wane, to grow less"), from wano- "lacking," from PIE we-no-, from root eue- "to leave, abandon, give out" (see vain). Related: Waned; waning; wanes.
不择手段背单词	vi. (名声)衰落; 月亏【记】拼: 万恶(淫为首)－名声衰落【反】intensify(vt 加强)
趣味全助记	【记】同源于vain 徒然的, 无益的；音：微, 微弱,微音，声音减弱，衰微；音：乌云，乌云遮挡了月亮太阳造成月亏

Wane Wein V.减少，衰微 英 V.减少，衰微(To Decrease Size Extent

Wane Wein V.减少，衰微英 V.减少，衰微(To Decrease Size Extent