borrowed from Latin, prefix forming verbs and verbal derivatives, marking movement toward, tendency, addition, from ad, preposition, "to, as far as, at, near, in accordance with" — more at at entry 1
Adverb suffix
borrowed from Latin ad "to, toward" — more at at entry 1
Noun suffix
borrowed from New Latin -ad-, -as, borrowed from Greek -ad-, -as, feminine noun suffix denoting descent from or connection with