simple past tense and past participle of open

(transitive) To make something accessible or allow for passage by moving from a shut position.

(with the) Open or unobstructed space; an exposed location. / (with the) Public knowledge or scrutiny; full view. / (electronics) A defect in an electrical circuit preventing current from flowing.

Able to be accessed. / Able to have something pass through or along it. / (of a body part) not covered, showing what is inside / Not physically drawn together, closed, folded or contracted; extended.

A person who opens something. / A device that opens something; specifically a tin-opener/can-opener, or a bottle opener. / (in combination) An establishment that opens.

Capable of being opened.

Pertaining to the start or beginning of a series of events.

present participle of open

An act or instance of making or becoming open. / A gap permitting passage through. / An act or instance of beginning. / The first performance of a show or play by a particular troupe.

Accommodating attitude or opinion, as in receptivity to new ideas, behaviors, cultures, peoples, environments, experiences, etc., different from the familiar, conventional, traditional, or one's own.