Frequently depreciative. (Now the usual sense.) In a state of slavish subjection to a desire, influence, etc. Cf. servant, n. 5b. Now rare.

Enamoured.

Of a person: carried away by or filled with enthusiasm or desire; wildly excited; infatuated. With about, after, for, †of, on (chiefly British), over…

With about, on, over, etc. Having or manifesting a passion for or obsession with someone or something; mad on, wildly excited about. Cf. bug, n.2 4a.

colloquial. Highly interested in, keen on.