4-Letter Words Starting: OP

• large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean

• To open.

• affording unobstructed entrance and exit; not shut or closed

• affording free passage or access

• used of mouth or eyes

• (set theory) of an interval that contains neither of its endpoints

• ready or willing to receive favorably

• open and observable; not secret or hidden

• a clear or unobstructed space or expanse of land or water

• where the air is unconfined

• a tournament in which both professionals and amateurs may play

• information that has become public

• with no protection or shield

• open to or in view of all

• not having been filled

• accessible to all

• not defended or capable of being defended

• (of textures) full of small openings or gaps

• having no protecting cover or enclosure

• not brought to a conclusion; subject to further thought

• not sealed or having been unsealed

• without undue constriction as from e.g. tenseness or inhibition

• not requiring union membership

• possibly accepting or permitting

• affording free passage or view

• openly straightforward and direct without reserve or secretiveness

• ready for business

• cause to open or to become open

• start to operate or function or cause to start operating or functioning

• become open

• begin or set in action, of meetings, speeches, recitals, etc.

• spread out or open from a closed or folded state

• make available

• become available

• have an opening or passage or outlet

• make the opening move

• afford access to

• display the contents of a file or start an application as on a computer

• a musical work that has been created

• a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

• select as an alternative over another

• To open.