open
o-pen
noun
A major sports competition, often open to both professionals and amateurs.
"She won the British Open."
verb
To move something from a closed position, allowing access or passage.
"Please open the door for me."
adjective
Not closed or covered; allowing free passage or access.
"The window was left open."
adjective
Honest and direct; not secretive or reserved.
"He was very open about his past."
Thesaurus
Synonyms: assailable, undefendable, undefended, vulnerable, unconstricted, clear, available, unenclosed, out-of-doors, outdoors, open air, open up
Antonyms: close, close down, close up, closed, covert, fold, fold up, shut, shut down, turn up, unopen, unreceptive