Downward
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 06:23的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/downward ref] down + -ward == etymonline == [https://www.etymonline.com/word/downw…”的新页面）
wiktionary
down + -ward
etymonline
downward (adv.)
"from a higher to a lower place, state, or condition," late 12c., from down (adv.) + -ward. As a preposition, "down," by late 14c. As an adjective, "moving or tending from a higher to a lwer place, state, or condition," from 1550s. As an adverb Old English had aduneweard. Downwards (c. 1200), with adverbial genitive, had a parallel in Old English ofduneweardes.
