NOT CLOSED › not closed or fastened: an open door/window Someone had left the gate wide open. Is there a bottle of wine already open? I threw all the doors open (= opened them quickly). A magazine was lying open on her lap. The kids were so tired they could hardly keep their eyes open.
DOING BUSINESS › A shop or business is open during the time it is available for business or serving customers: Most shops are open on Sundays now.
COMPUTERS › If a computer document or program is open, it is ready to be read or used.
WITHOUT BUILDINGS [always before noun] › An open area of land has no buildings on it or near it: large open spaces open fields
FOR EVERYONE › If a place or event is open, everyone can go to it or become involved in it: an open debate Are the gardens open to the public?
HONEST › An open person is honest and does not hide their feelings: He's very open and friendly.
NOT HIDDEN [always before noun] › Open feelings, usually negative ones, are not hidden: open hostility/rivalry
NOT DECIDED › If a decision or question is open, it has not yet been decided: We don't have to make a firm arrangement now. Let's leave it open.
have/keep an open mind › to wait until you know all the facts before you form an opinion about something or judge someone: The cause of the fire is still unclear and we are keeping an open mind.
open to discussion/suggestions, etc › willing to consider a discussion/suggestions, etc: This is only a proposal. I'm open to suggestions.
open to abuse/criticism, etc › likely to be abused/criticized, etc: The system is wide open to abuse. → See also with your eyes open