Having no protecting or concealing cover: an open wound; an open sports car.
Completely obvious; blatant: open disregard of the law.
Carried on in full view: open warfare; open family strife.
Sports Not closely defended by an opponent: an open receiver.
Not sealed or tied: an open package.
Spread out; unfolded: an open book.
Having interspersed gaps, spaces, or intervals: open ranks; an open weave.
Accessible to all; unrestricted as to participants: an open competition.
Free from limitations, boundaries, or restrictions: open registration.
Enterable by registered voters regardless of political affiliation: an open primary.
Computer Science Of or relating to a file that can be accessed.
Lacking effective regulation: an open town in which gambling predominated.
Not legally repressed: open drug trafficking.
Susceptible; vulnerable: open to interpretation; an issue that is open to question.
Willing to consider or deal with something: open to suggestions.
Available; obtainable: The job is still open.
Available for use: an open account; the only course open to us.
Ready to transact business: The store is open.
Not engaged or filled: has an open hour for emergency cases.
Not yet decided; subject to further thought: an open question.
Characterized by lack of pretense or reserve; candid: Please be open with me. See Synonyms at frank1.
Free of prejudice; receptive to new ideas and arguments: She listened to the proposal with an open mind.
Generous: He is very open with his time.