wane

• vi.減少する；小さくなる；不足する；干上がる；衰退する
• n.後退；毎月の損失；衰退期；不足
• n.（ウェイン）人名；（英）ウェイン；（アラブ）ワニ；（いくつかの、マリ、セネ）ウェイン

原語ゲルマン語 *wano から、欠乏、空虚、語源は want や waste と同じ。

wane

wane: [OE] Wane and Norwegian vana ‘spoil, waste’ are the only survivors of a family of Germanic verbs that goes back to a prehistoric *wanōjan. This was derived from the base *wan- ‘lacking’, which also produced English want. The related but now defunct English adjective wane ‘lacking’ is represented in the first syllable of wanton.
=> want, wanton

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.

1. The moon is on the wane .

月がだんだん欠損していく.

2.When did the empire begin to wane ？

その帝国はいつ衰退し始めたのか。

3.Her enthusiasm for him was beginning to wane .

彼女の彼に対する情熱は減退し始めている。

4.He was nominally Deputy Prime Minister，certainly，but his influence was clearly on the wane .

もちろん、彼は名目上副首相だが、影響力が低下していることは明らかだ。

5. In 1982, with his career prospects on the wane , he sold a script for ￡5,000.

1982年、彼の事業が下り坂になった時、5000ポンドで脚本を売った。