open
open is a valid 4-letter word worth 6 points in Scrabble and 8 points in Words with Friends.
What does open mean?
(of textures) full of small openings or gaps.
“an open texture”
Ready or willing to receive favorably.
Used of mouth or eyes.
“keep your eyes open”
“his mouth slightly opened”
Open and observable; not secret or hidden.
“open ballots”
Affording unobstructed entrance and exit; not shut or closed.
“an open door”
“they left the door open”
Not defended or capable of being defended.
“an open city”
“open to attack”
Not brought to a conclusion; subject to further thought.
“an open question”
Accessible to all.
“open season”
“an open economy”
Affording free passage or access.
“open drains”
“the road is open to traffic”
Having no protecting cover or enclosure.
“an open boat”
“an open fire”
Possibly accepting or permitting.
“open to interpretation”
“an issue open to question”
Not having been filled.
“the job is still open”
Not requiring union membership.
“an open shop employs nonunion workers”
Open to or in view of all.
“an open protest”
“an open letter to the editor”
Ready for business.
“the stores are open”
(set theory) of an interval that contains neither of its endpoints.
Without undue constriction as from e.g. tenseness or inhibition.
“the clarity and resonance of an open tone”
“her natural and open response”
Spread out or open from a closed or folded state.
“open the map”
Become available.
“an opportunity opened up”
Afford access to.
“the door opens to the patio”
Become open.
“The door opened”
Make available.
“This opens up new possibilities”
Cause to open or to become open.
“Mary opened the car door”
Begin or set in action, of meetings, speeches, recitals, etc.
“He opened the meeting with a long speech”
Display the contents of a file or start an application as on a computer.
Make the opening move.
“Kasparov opened with a standard opening”
Where the air is unconfined.
“the concert was held in the open air”
“camping in the open”
Information that has become public.
“all the reports were out in the open”
A tournament in which both professionals and amateurs may play.
Have an opening or passage or outlet.
“The bedrooms open into the hall”