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