You are aware that “yeah” and “yea” are pronounced differently. Many, many people are not aware of that. Many people, in attempting to write “yeah,” write “yea” and think they are correct. I was suggesting that those same ignorant people also write “yay” for “yea,” perhaps because they don’t realize those two words are pronounced the same.
Hm, I’ve never seen anyone write “yea” for anything other than “yea or nay”, given that it’s an archaic word that pretty much only survives in that phrase.
I’d generally guess that most people simply aren’t aware that there is such a word.
Just last night I wrote on facebook, “Yea, I’m glad you’re back in town!” And oddly enough, I was unaware of the word “yay” until this thread. I was, however, aware that “yeah” and “yea” are pronounced differently.
I’m communicating badly in this thread. Let me try again.
Step One: Ignorant person A, unaware of spelling conventions, invents the spelling “yea” for “yeah,” not knowing or caring that “yea” is a distinct word with a distinct pronunciation but similar meaning.
Step Two: Ignorant person B wants the phrase “yea or nay,” which they have heard but not seen. The word “yea” is unknown to them, except possibly when they have seen it incorrectly used for “yeah,” so they invent “yay or nay,” unaware that “yay” is already a spelling used for the celebratory utterance.
Ignorant persons A and B may or may not be the same, but they use the same internet and they all enroll in my classes.
yea: in Old English, from 731 (about as early as you get), many Germanic cognates.
yeah: from 1905, “casual pronunciation of ‘yes.’”
yep: from 1891, “a dial. or vulgar pronunciation of ‘yes.’”
yes: from circa 888, evidently yea plus the third-person singular subjunctive of “be” (but they note this is a disputed etymology).
Pedantic P.S.: She loveth thee, yea, yea, yea. “Thou” is nominative.