1. To make open declaration of, as of one's knowledge, belief, action, etc.; to avow or acknowledge; to confess publicly; to own or admit freely. Hear me profess sincerely. The best and wisest of them all professed To know this only, that he nothing knew. (milton)
3. To present to knowledge of, to proclaim one's self versed in; to make one's self a teacher or practitioner of, to set up as an authority respecting; to declare (one's self to be such); as, he professes surgery; to profess one's self a physician.
Origin: F. Profes, masc, professe, fem, professed (monk or nun), L. Professus, p. P. Of profiteri to profess; pro before, forward _ fateri to confess, own. See Confess.