profiteor

Etymology
From.

Verb

 * 1) to declare publicly, own (up to) or confess openly, acknowledge, avow, profess
 * 2) to offer freely, promise
 * 3) to profess, claim; to declare oneself (as), practice (as)
 * 4) to make a show of, show, display
 * 5) to make a public statement or a return of
 * 6) to be a teacher or professor
 * 7) to volunteer
 * 1) to make a public statement or a return of
 * 2) to be a teacher or professor
 * 3) to volunteer

Conjugation
Old forms are:
 * infinitive:
 * 2nd person singular imperative future: