v. (UN-2 4, 7.)
1611. Florio, Disberettare, to vncap, to vnhat.
1879. H. Spencer, Ceremonial Inst., vi. 134. Unhatting on the knees when the host is carried by, occurs still in Catholic countries.
1883. Academy, 30 June, 460/1. To the latter we must often unhat as to the oldest of acquaintances.