open 
0 
adj 1: affording unobstructed entrance and exit; not shut or
closed; "an open door"; "they left the door open" [syn:
open, unfastened] [ant: closed, shut, unopen]
2: affording free passage or access; "open drains"; "the road is
open to traffic"; "open ranks" [ant: closed]
3: with no protection or shield; "the exposed northeast
frontier"; "open to the weather"; "an open wound" [syn:
exposed, open]
4: open to or in view of all; "an open protest"; "an open letter
to the editor"
5: used of mouth or eyes; "keep your eyes open"; "his mouth
slightly opened" [syn: open, opened] [ant: closed,
shut]
6: not having been filled; "the job is still open"
7: accessible to all; "open season"; "an open economy"
8: not defended or capable of being defended; "an open city";
"open to attack" [syn: assailable, undefendable,
undefended, open]
9: (of textures) full of small openings or gaps; "an open
texture"; "a loose weave" [syn: loose, open]
10: having no protecting cover or enclosure; "an open boat"; "an
open fire"; "open sports cars"
11: (set theory) of an interval that contains neither of its
endpoints [ant: closed]
12: 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" [syn:
open, undecided, undetermined, unresolved]
13: not sealed or having been unsealed; "the letter was already
open"; "the opened package lay on the table" [syn: open,
opened]
14: without undue constriction as from e.g. tenseness or
inhibition; "the clarity and resonance of an open tone";
"her natural and open response"
15: ready or willing to receive favorably; "receptive to the
proposals" [syn: receptive, open] [ant: unreceptive]
16: open and observable; not secret or hidden; "an overt lie";
"overt hostility"; "overt intelligence gathering"; "open
ballots" [syn: overt, open] [ant: covert]
17: not requiring union membership; "an open shop employs
nonunion workers"
18: 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" [syn: capable,
open, subject]
19: affording free passage or view; "a clear view"; "a clear
path to victory"; "open waters"; "the open countryside"
[syn: clear, open]
20: openly straightforward and direct without reserve or
secretiveness; "his candid eyes"; "an open and trusting
nature"; "a heart-to-heart talk" [syn: candid, open,
heart-to-heart]
21: ready for business; "the stores are open"
n 1: a clear or unobstructed space or expanse of land or water;
"finally broke out of the forest into the open" [syn:
open, clear]
2: where the air is unconfined; "he wanted to get outdoors a
little"; "the concert was held in the open air"; "camping in
the open" [syn: outdoors, out-of-doors, open air,
open]
3: a tournament in which both professionals and amateurs may
play
4: information that has become public; "all the reports were out
in the open"; "the facts had been brought to the surface"
[syn: open, surface]
v 1: cause to open or to become open; "Mary opened the car door"
[syn: open, open up] [ant: close, shut]
2: start to operate or function or cause to start operating or
functioning; "open a business" [syn: open, open up] [ant:
close, close down, close up, fold, shut down]
3: become open; "The door opened" [syn: open, open up] [ant:
close, shut]
4: begin or set in action, of meetings, speeches, recitals,
etc.; "He opened the meeting with a long speech" [ant:
close]
5: spread out or open from a closed or folded state; "open the
map"; "spread your arms" [syn: unfold, spread, spread
out, open] [ant: fold, fold up, turn up]
6: make available; "This opens up new possibilities" [syn:
open, open up]
7: become available; "an opportunity opened up" [syn: open,
open up]
8: have an opening or passage or outlet; "The bedrooms open into
the hall"
9: make the opening move; "Kasparov opened with a standard
opening"
10: afford access to; "the door opens to the patio"; "The French
doors give onto a terrace" [syn: afford, open, give]
11: display the contents of a file or start an application as on
a computer [ant: close]
