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