- (transitive) to remove a cap or top from (a container): to uncap a bottle
- to remove a cap from (the head)
WordReference Random House Unabridged Dictionary of American English © 2026
un•cap
(un kap′),USA pronunciation v., -capped, -cap•ping.
v.t.
v.i.
v.t.
- to remove a cap or cover from (a bottle, container, etc.).
- to free from limits or restrictions:The union is demanding that cost-of-living allowances be uncapped.
- to remove a cap or hat from (the head of a person).
v.i.
- to remove the cap or hat from the head, as in respect.
- un-2 + cap1 1560–70
Collins Concise English Dictionary © HarperCollins Publishers::
uncap /ʌnˈkæp/ vb ( -caps, -capping, -capped)
'uncap' also found in these entries (note: many are not synonyms or translations):