yea

adverb

1. yes (used in affirmation or assent).
2. indeed: Yea, and he did come.
3. not only this but even: a good, yea, a noble man.

noun

4. an affirmation; an affirmative reply or vote.
5. a person who votes in the affirmative.

adverb

1. yay2.

adverb Informal.

1. to the extent, amount, etc., indicated: The doll is about yay high.

sentence substitute

1. a less common word for aye 1 (def. 1)

adverb

2. (sentence modifier) archaic, or literary indeed; trulyyea, though my enemies spurn me, I shall prevail

interjection

1. informal an exclamation indicating approval, congratulation, or triumph

Old English gea (West Saxon), ge (Anglian) “so, yes,” from Proto-Germanic *ja-, *jai-, a word of affirmation (cf. German, Danish, Norwegian, Swedish ja), from PIE *yam-, from pronomial stem *i- (see yon). “this,” as in yay big “this big,” 1950s, perhaps from yea “yes” in its sense of “even, truly, verily.” “a sort of demonstrative adverb used with adjectives of size, height, extent, etc., and often accompanied by a hand gesture indicating size” [DAS].