Anagrams of: OUPEN

• 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

• Being the target of an action.

• Physically above and in contact with.

• Physically directly supported by.

• Being followed by another so as to form a series.

• At (a prescribed point in time).

• On.

• A negative reply, no.

• An intensely undesirable thing, such as a circumstance or an animal, eliciting immediate repulsion without possibility of further consideration.

• (except near Staffordshire) A bullfinch

• A blow to the head.

• To hit someone on the head.

• a laborer who is obliged to do menial work

• cornbread often made without milk or eggs and baked or fried (southern)

• a writing implement with a point from which ink flows

• an enclosure for confining livestock

• a portable enclosure in which babies may be left to play

• a correctional institution for those convicted of major crimes

• female swan

• produce a literary work

• a humorous play on words

• make a play on words

• (Midwest) an exclamation of surprise; oops

• To open.

• Open.

• being or moving higher in position or greater in some value; being above a former position or level

• spatially or metaphorically from a lower to a higher position

• to a higher intensity

• nearer to the speaker

• to a more central or a more northerly place

• to a later time

• out of bed

• getting higher or more vigorous

• extending or moving toward a higher place

• (usually followed by `on' or `for') in readiness

• open

• (used of computers) operating properly

• used up

• raise