open
noun.
a clear or unobstructed space or expanse of land or water
finally broke out of the forest into the open
Synonym: clear
noun.
where the air is unconfined
he wanted to get outdoors a little|the concert was held in the open air|camping in the open
noun.
a tournament in which both professionals and amateurs may play
noun.
information that has become public
all the reports were out in the open|the facts had been brought to the surface
Synonym: surface
verb.
cause to open or to become open
Mary opened the car door
Synonym: open up
verb.
start to operate or function or cause to start operating or functioning
open a business
Synonym: open up
verb.
become open
The door opened
Synonym: open up
verb.
begin or set in action, of meetings, speeches, recitals, etc.
He opened the meeting with a long speech
verb.
spread out or open from a closed or folded state
open the map|spread your arms
verb.
make available
This opens up new possibilities
Synonym: open up
verb.
become available
an opportunity opened up
Synonym: open up
verb.
have an opening or passage or outlet
The bedrooms open into the hall
verb.
make the opening move
Kasparov opened with a standard opening
verb.
afford access to
the door opens to the patio|The French doors give onto a terrace
Synonym: afford, give
verb.
display the contents of a file or start an application as on a computer
adj.
affording unobstructed entrance and exit; not shut or closed
an open door|they left the door open
Synonym: unfastened
adj.
affording free passage or access
open drains|the road is open to traffic|open ranks
adj.
used of mouth or eyes
keep your eyes open|his mouth slightly opened
Synonym: opened
adj.
(set theory) of an interval that contains neither of its endpoints
adj.
ready or willing to receive favorably
receptive to the proposals
Synonym: receptive
adj.
open and observable; not secret or hidden
an overt lie|overt hostility|overt intelligence gathering|open ballots
Synonym: overt
adj.
with no protection or shield
the exposed northeast frontier|open to the weather|an open wound
Synonym: exposed
adj.
open to or in view of all
an open protest|an open letter to the editor
adj.
not having been filled
the job is still open
adj.
accessible to all
open season|an open economy
adj.
not defended or capable of being defended
an open city|open to attack
adj.
(of textures) full of small openings or gaps
an open texture|a loose weave
Synonym: loose
adj.
having no protecting cover or enclosure
an open boat|an open fire|open sports cars
adj.
not brought to a conclusion; subject to further thought
an open question|our position on this bill is still undecided|our lawsuit is still undetermined
adj.
not sealed or having been unsealed
the letter was already open|the opened package lay on the table
Synonym: opened
adj.
without undue constriction as from e.g. tenseness or inhibition
the clarity and resonance of an open tone|her natural and open response
adj.
not requiring union membership
an open shop employs nonunion workers
adj.
possibly accepting or permitting
a passage capable of misinterpretation|open to interpretation|an issue open to question|the time is fixed by the director and players and therefore subject to much variation
Synonym: capable, subject
adj.
affording free passage or view
a clear view|a clear path to victory|open waters|the open countryside
Synonym: clear
adj.
openly straightforward and direct without reserve or secretiveness
his candid eyes|an open and trusting nature|a heart-to-heart talk
adj.
ready for business
the stores are open
Antonym: close, closed, shut