adj. not closed; not sealed; exposed, vulnerable; honest, frank; receptive; unrestricted; spread out; accessible; available

v. move to an open position; be moved to an open position; begin; clear from obstructions; lead out or into; spread out; unseal; expose; make vulnerable; become receptive; remove restrictions; make accessible; make available

n. spacious place; wilderness, outdoors; open air, fresh air; competition in which both professionals and amateurs may compete; state of being unconcealed

The following video provides you with the correct English pronunciation of the word "Open", to help you become a better English speaker.

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Noun
1. a clear or unobstructed space or expanse of land or water; "finally broke out of the forest into the open"
(synonym) clear
(hypernym) area, country
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"
(synonym) outdoors, out-of-doors, open air
(hypernym) outside, exterior
3. a tournament in which both professionals and amateurs may play
(hypernym) tournament, tourney
4. information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface"
(synonym) surface
(hypernym) public knowledge, general knowledge
(derivation) afford, give

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Verb
1. cause to open or to become open; "Mary opened the car door"
(synonym) open up
(antonym) close, shut
(hyponym) unbar
(cause) open up
(derivation) undoer, opener, unfastener, untier
2. start to operate or function or cause to start operating or functioning; "open a business"
(synonym) open up
(antonym) close, fold, shut down, close down
(hyponym) establish, set up, found, launch
(derivation) opening
3. become open; "The door opened"
(synonym) open up
(antonym) close, shut
(hypernym) change state, turn
(hyponym) unfasten
(derivation) opening
4. begin or set in action, of meetings, speeches, recitals, etc.; "He opened the meeting with a long speech"
(antonym) close
(hypernym) start, start up, embark on, commence
(hyponym) inaugurate
(see-also) pioneer, open up
(derivation) opener
5. spread out or open from a closed or folded state; "open the map"; "spread your arms"
(synonym) unfold, spread, spread out
(hypernym) undo
(hyponym) divaricate
(derivation) opening
6. make available; "This opens up new possibilities"
(synonym) open up
(hypernym) yield, give, afford
(cause) open up
(derivation) opening
7. become available; "an opportunity opened up"
(synonym) open up
(hypernym) arise, come up
(derivation) opening
8. have an opening or passage or outlet; "The bedrooms open into the hall"
(derivation) opening, gap
9. make the opening move; "Kasparov opened with a standard opening"
(hypernym) move, go
(derivation) first step, initiative, opening move, opening
(classification) chess, chess game
10. afford access to; "the door opens to the patio"; "The French doors give onto a terrace"
(synonym) afford, give
(derivation) surface
11. display the contents of a file or start an application as on a computer
(antonym) close
(hypernym) expose, exhibit, display

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Adjective
1. affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"
(synonym) unfastened
(antonym) shut, unopen, closed
(similar) ajar(p)
2. affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks"
(antonym) closed
(similar) yawning
(see-also) unfastened
3. with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound"
(synonym) exposed
(similar) unprotected
4. open to or in view of all; "an open protest"; "an open letter to the editor"
(similar) public
5. used of mouth or eyes; "keep your eyes open"; "his mouth slightly opened"
(synonym) opened
(antonym) closed, shut
(similar) agape(p), gaping
6. not having been filled; "the job is still open"
(similar) available
7. accessible to all; "open season"; "an open economy"
(similar) unrestricted
8. not defended or capable of being defended; "an open city"; "open to attack"
(synonym) assailable, undefendable, undefended
(similar) vulnerable
9. (of textures) full of small openings or gaps; "an open texture"; "a loose weave"
(synonym) loose
(similar) coarse
10. having no protecting cover or enclosure; "an open boat"; "an open fire"; "open sports cars"
(similar) unenclosed
11. opened out; "an open newspaper"
(similar) unfolded
12. of a set; containing points whose neighborhood consists of other points of the same set, or being the complement of an open set; of an interval; containing neither of its end points
(antonym) closed
(classification) mathematics, math, maths
13. 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"
(synonym) undecided, undetermined, unresolved
(similar) unsettled
14. not sealed or having been unsealed; "the letter was already open"; "the opened package lay on the table"
(synonym) opened
(similar) unsealed
15. without undue constriction as from e.g. tenseness or inhibition; "the clarity and resonance of an open tone"; "her natural and open response"
(similar) unconstricted
16. relatively empty of and unobstructed by fences or hedges or headlands or shoals; "in open country"; "the open countryside"; "open waters"; "on the open seas"
(similar) empty
17. open and observable; not secret or hidden; "an overt lie"; "overt hostility"; "overt intelligence gathering"
(synonym) overt
(similar) bald, barefaced
(see-also) explicit, expressed
18. used of string or hole or pipe of instruments
(synonym) unstopped
(classification) music
19. not requiring union membership; "an open shop employs nonunion workers"
(synonym) open(a)
(similar) nonunion
20. 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
(similar) susceptible
21. not secret; "open plans"; "an open ballot"
(similar) unconcealed
22. without any attempt at concealment; completely obvious; "open disregard of the law"; "open family strife"; "open hostility"; "a blatant appeal to vanity"; "a blazing indiscretion"
(synonym) blatant, blazing, conspicuous
(similar) unconcealed
23. affording free passage or view; "a clear view"; "a clear path to victory"
(synonym) clear
(similar) unobstructed
24. lax in enforcing laws; "an open town"
(synonym) wide-open, lawless
(similar) unlawful
25. openly straightforward and direct without reserve or secretiveness; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk"
(synonym) candid, heart-to-heart
(similar) ingenuous, artless
26. sincere and free of reserve in expression; "Please be open with me"
(similar) honest, honorable
27. receptive to new ideas; "an open mind"; "open to new ideas"
(similar) unprejudiced, impartial
28. ready for business; "the stores are open"
(similar) active

n. open, open air

adv. together, one upon another

adv. overtly, aboveboard

adj. open, overt, open-ended, unfortified, unoccupied, clear, free for all

v. open, unlock, lead off