swift

• n. 茶色のニジツバメ
• adj.速い; 迅速な; 敏捷な; 即時の
• adv.素早く
• n.（スウィフト）人名；（英国）スウィフト

古英語のswiftから、原ゲルマン語*swiftazの「素早い」、PIE*sweipの「風を切る」、「曲げる」、PIE*swiの「曲がる」、「回る」、「揺れる」、語源的にはswing、sweepと同じ。

swift

swift: [OE] The etymological meaning of swift appears to be ‘moving along a course’; ‘speed’ is a secondary development. It goes back ultimately to the prehistoric Germanic base *swei- ‘swing, bend’, which also produced English sweep, swivel [14], and the long defunct swive ‘copulate with’ (a descendant of Old English swīfan ‘move in a course’). Its use as a name for the fast-flying swallow-like bird dates from the 17th century.
=> sweep, swivel

swift (adj.)

Old English swift "moving quickly," perhaps originally "turning quickly," from Proto-Germanic swip- (see swivel (n.)). Related: Swiftly; swiftness.

swift (n.)

type of bird (several species of the family Cypselid?, resembling swallows), 1660s, from swift (adj.) in reference to its swift flight. Regarded as a bird of ill-omen, if not downright demonic, probably for its shrill cry. The name earlier had been given to several small fast lizards (1520s).

1. He is very sharp，a quick thinker and swift with repartee.

彼は非常に機敏で、反応が速く、口が達者だ。

2.Jaegers are swift black birds with long forked tails.

イェーガーは飛行速度の速い黒い鳥で、尾が部長で分岐している。

3.He is a stupendously swift writer.

彼は非常に多産の作家だ。

4.With a swift movement，Matthew Jerrold sat upright.

マシュー?ジェロルドは急速にまっすぐに座った。

5.The White House was swift to deny the rumours.

ホワイトハウスはすぐにこれらの噂を否定した。