Word Origin & History
ape
O.E. apa, from P.Gmc. *apan (cf. O.S. apo, O.N. api, Du. aap, Ger. affe), perhaps borrowed in P.Gmc. from Celtic (cf. O.Ir. apa) or Slavic (cf. O.Bohemian op, Slovak opitza), probably ult. from a non-I.E. language. The verb "to imitate" (1632) is implied in to play the ape (1579), and the noun sense of "one who mimics" may date from c.1230. Ape-man, hypothetical "missing link," is from 1879, in a translation of Haeckel. To go ape (in emphatic form, go apeshit) "go crazy" is 1955, U.S. slang. To lead apes in hell (1579) was the fancied fate of one who died an old maid.