Ob"so*lete, v. i. To become obsolete; to go out of use. [R.] Fitzed. Hall.

Ob"so*lete (?), a. [L. obsoletus, p. p. of obsolescere. See Obsolescent.] 1. No longer in use; gone into disuse; disused; neglected; as, an obsolete word; an obsolete statute; -- applied chiefly to words, writings, or observances.

2. (Biol.) Not very distinct; obscure; rudimental; imperfectly developed; abortive.

Syn. -- Ancient; antiquated; old-fashioned; antique; old; disused; neglected. See Ancient.