proclitic

adjective

Gram. dependent on the following word for its stress: said as of a word that forms a phonetic unit with the following, stressed word (Ex.: for in “once and for all”), or of certain particles, as in classical Greek

Etymology: ModL procliticus < Gr proklinein, to lean forward < pro-, forward (see pro-) + klinein, to lean

noun

any such word or particle