Aux

Part of speech: adjective, noun

Definitions

1. A linguistic term referring to a word that helps to form the tense, mood, or voice of another verb
2. In computing, a label for a supplementary component that enhances or facilitates main processes or features
3. A grammatical element that serves to assist in conjugating verbs and expressing aspects like time, attitude, or action completeness

Etymology: "Aux" is a clipping of "auxiliary," and the longer word traces back to Latin "auxilium," meaning "help" or "aid." That noun was itself built on "augēre," "to increase," so the idea of help is rooted in the idea of growth or enlargement: something that adds to what is already there. Latin speakers used "auxiliārius" for an assistant or ally, and the adjective "auxiliāris" for something helping or aiding. The shortened form "aux" is what makes the word feel modern. Clipping a long technical term down to a few letters is common in computing, where an auxiliary port, cable, or file is a supplementary part that supports the main system. The word itself has stayed close to its Latin sense throughout, always pointing to something that assists rather than something that leads.

Synonyms: auxiliary, assistant, support

Antonyms: main, primary, principal