plant, also known as milfoil, Old English gearwe "yarrow," from Proto-Germanic *garwo (source also of Middle Dutch garwe, Old High German garawa, German Garbe), which is perhaps from a source akin to the root of yellow (adj.).

"to fall away from the line of a course," 1580s (as a noun 1540s), perhaps ultimately from Old Norse jaga, Old Danish jæge "to drive, chase," from Middle Low German jagen (see yacht).

contagious skin disease, 1670s, from Carib yaya, the native name for it.

type of ship's boat, 1660s, apparently from Middle Low German jolle or Dutch jol "a Jutland boat" (according to a 1708 source), of uncertain origin. Also borrowed into French (yole), Italian (jolo), Russian (yal).

c. 1300, yenen, yonen, from Old English ginian, gionian "open the mouth wide, yawn, gape," from Proto-Germanic *gin- (source also of Old English giwian, giowian, giwan "to request," Old Norse gina "to yawn," Dutch geeuwen, Old High German ginen "to be wide open," German gähnen "to yawn"), from PIE root *ghieh- "to yawn, gape, be wide open." Modern spelling is from 16c. Related: Yawned; yawning.

"act of yawning," 1690s, from yawn (v.). Meaning "boring thing" is attested from 1889.

1680s, agent noun from yawn (v.). Meaning "boring thing" is 1942, American English colloquial (yawn (n.) in this sense is attested from 1889).

c. 1300, yolpen, probably echoic variant of yelpen (see yelp). Related: Yawped; yawping. The noun, in reference to speech, is recorded from 1835, now used chiefly in conscious echo of Whitman (1855).

Old English gicliopad; from y- + past participle of cleopian, cpipian "to speak, call; summon, invoke; implore" (see clepe).

*yē-, Proto-Indo-European root meaning "to throw, impel."

It forms all or part of: abject; abjection; adjacence; adjacent; adjective; aphetic; catheter; circumjacent; conjecture; deject; ease; ejaculate; eject; enema; gist; ictus; interjacent; inject; interject; interjection; jess; jet (v.1) "to sprout or spurt forth, shoot out;" jet (n.1) "stream of water;" jete; jetsam; jettison; jetton; jetty (n.) "pier;" joist; jut; object; objection; objective; paresis; project; projectile; reject; rejection; subjacent; subject; subjective; trajectory.

It is the hypothetical source of/evidence for its existence is provided by: Hittite ijami "I make;" Latin iacere "to throw, cast."