word of assent, 1570s, of unknown origin, perhaps a variant of I, meaning "I assent;" or an alteration of Middle English yai "yes" (see yea), or from aye (adv.) "always, ever. [..]

"always, ever," c. 1200, from Old Norse ei "ever" (cognate with Old English a "always, ever"), from PIE *aiw- "vital force, life, long life, eternity" (source a [..]

yeah

Average yearly earnings

adv. An expression of assent.

Phrase used to acknowledge that an order by an officer is understood and will be carried out. It was also sometimes used in acknowledging orders from NCOs, but this was not common, nor was it official [..]

  ever.

An old English word for yes used when votes are cast in support of a motion in the House. For example, “All those in favour say Aye”.

Aye means yes. For example, voted aye on the appropriations bill. In parliamentary law it refers to an affirmative vote or the voter who cast it. For example, the ayes outnumber the nays on this issue [..]

The reply to an officer's order signifying that he is understood and will be obeyed (I understand). Bail: To throw water out of a boat; a yoke, as a ladder bail (rung).

The reply to an order or command to indicate that it, firstly, is heard; and, secondly, is understood and will be carried out. ('Aye, aye, sir' to officers). Also 'yarr'.

The reply to an officer’s order signifying that he is understood and will be obeyed (I understand).

Yes. "Aye aye sir" is a reply on board ship on receipt of an order.

reply to an order or command, indicating that it is understood and will be carried out.

Reply to an order or command to indicate that it, firstly, is heard; and, secondly, is understood and will be carried out. ("Aye, aye, sir" to officers)

The derivation of this is generally thought to be unknown, but some experts think it may possibly come from the German "Eiey!" - an exclamation of astonishment or admiration.

Reply to an order or command to indicate that it, firstly, is heard; and, secondly, is understood and will be carried out. ("Aye, aye, sir" to officers). Also the proper reply from a hailed boat, to indicate that an officer is on board.

Yes. "Aye aye sir" is a reply on board ship on receipt of an order.

Yes. From Anglo-Saxon meaning 'ever-always'. Ayont

An affirmative vote; one who votes in the affirmative. ''"To call for the ayes and nays;" "The ayes have it."''