Unshut

Part of speech: adjective, verb

Definitions

1. To cause something that is shut to open or become open
2. To open something that has been closed or fastened
3. To make something that was closed swing or slide open

Etymology: "Unshut" is a plain compound: the reversing prefix "un-" attached to "shut." The prefix is native English, descended from Old English "un-", and it has long been used to reverse the action of a verb, as in "undo," "unlock," or "unwrap." Adding it to "shut" gives a word meaning to open something that has been closed, or to reverse the state of being shut.

Synonyms: open

Antonyms: shut, closed