open in English

adjective

1

allowing access, passage, or a view through an empty space; not closed or blocked up.

it was a warm evening and the window was open

synonyms: not shut, not closed, unlocked, unbolted, unlatched, off the latch, unfastened, unsecured, ajar, gaping, wide open, yawning

2

exposed to the air or to view; not covered.

an open fire burned in the grate

3

(of a store, place of entertainment, etc.) officially admitting customers or visitors; available for business.

the store stays open until 9 p.m.

synonyms: open for business, open to the public

4

(of a person) frank and communicative; not given to deception or concealment.

she was open and naive

synonyms: frank, candid, honest, forthcoming, communicative, forthright, direct, unreserved, plain-spoken, outspoken, straightforward, blunt, not afraid to call a spade a spade, upfront, free-spoken

5

(of a question, case, or decision) not finally settled; still admitting of debate.

students' choice of major can be kept open until the second year

synonyms: unresolved, undecided, unsettled, yet to be settled, up in the air, open to debate, open for discussion, arguable, debatable, moot

6

(of a string) allowed to vibrate along its whole length.

You can learn how to use an open string to give a reference tone when playing the fiddle.

7

(of an electrical circuit) having a break in the conducting path.

No or low output voltage means the transformer winding has open or shorted winding.

8

(of a set) not containing any of its limit points.

Let the point set M be the sum of the open sets Mx, M2.

noun

1

a championship or competition with no restrictions on who may qualify to compete.

the venue for the British Open

2

an accidental break in the conducting path for an electrical current.

An open in a wire prevents the propagation of a signal past the open.

verb

1

move or adjust (a door or window) so as to leave a space allowing access and view.

she opened the door and went in

synonyms: unfasten, unlatch, unlock, unbolt, unbar, throw wide

2

unfold or be unfolded; spread out.

the eagle opened its wings and circled up into the air

synonyms: spread out, unfold, unfurl, unroll, straighten out, extend, stretch out

3

make available or more widely known.

the new plan proposed to open up opportunities to immigrants

4

establish (a new business, movement, or enterprise).

they have opened a new restaurant across the street

5

break the conducting path of (an electrical circuit).

the switch opens the motor circuit

adjective

not shut, not closed, unlocked, unbolted, unlatched, off the latch, unfastened, unsecured, ajar, gaping, wide open, yawning
unfastened, not done up, undone, loose, unbuttoned, unzipped, unbuckled, untied, unlaced
clear, passable, navigable, unblocked, unobstructed
unenclosed, rolling, sweeping, extensive, wide open, unfenced, exposed, unsheltered, spacious, airy, uncrowded, uncluttered, undeveloped, unbuilt-up
spread out, unfolded, unfurled, unrolled, extended, stretched out
open for business, open to the public
available, vacant, free, unfilled, up for grabs
vulnerable to, subject to, susceptible to, liable to, exposed to, an easy target for, at risk of, permitting of
frank, candid, honest, forthcoming, communicative, forthright, direct, unreserved, plain-spoken, outspoken, straightforward, blunt, not afraid to call a spade a spade, upfront, free-spoken
overt, obvious, patent, manifest, palpable, conspicuous, plain, undisguised, unconcealed, clear, apparent, evident, blatant, flagrant, barefaced, brazen
unresolved, undecided, unsettled, yet to be settled, up in the air, open to debate, open for discussion, arguable, debatable, moot
impartial, unbiased, unprejudiced, objective, disinterested, nonpartisan, nondiscriminatory, neutral, dispassionate, detached
receptive, amenable, willing to listen, ready to listen, responsive
available, accessible, on hand, obtainable
public, general, unrestricted, nonexclusive, nonrestrictive
unfastened
overt
opened
exposed
assailable, undefendable, undefended
undecided, undetermined, unresolved
candid, heart-to-heart
receptive
capable, subject
clear
loose

noun

outdoors, clear, surface
outdoors, open air, out-of-doors
clear
surface

verb

unfasten, unwrap, uncork, spread out, reveal, open for business, begin, give access to, open up, unfold, give
unfasten, unlatch, unlock, unbolt, unbar, throw wide
unwrap, undo, untie, unseal
uncork, broach, crack (open)
spread out, unfold, unfurl, unroll, straighten out, extend, stretch out
reveal, uncover, expose, lay bare, bare, pour out, disclose, divulge
open for business, start trading, set up shop, hang out one's shingle
begin, start, commence, initiate, set in motion, launch, get going, get underway, get the ball rolling, get off the ground, inaugurate, kick off, get the show on the road
give access to, lead to, be connected to, communicate with, face, overlook, command a view of
open up
unfold, spread out, spread
give, afford

Use "open" in a sentence

1. Open-ended, open hearth, open source, open door policy, open bar.

2. They want open software, open source, open potential.

3. Open Badges are: Free and open: Mozilla Open Badges is not proprietary

4. This is a bird of open and semi-open country.

5. Open gate.

6. Open-mindedness:

7. Open... sesame!

8. Open Sesame!

9. Open up!

10. Punctuation, Open

11. open access

12. Free, open.

13. Open, Sesame.

14. Open Sesame.

15. Open Ocean.

16. Open up.

17. Search the house, open the cabinet and open the curtains.

18. Open the door, you stupid motherfucker. Open the fucking door!

19. Search the house, open the cabinet and open the curtains

20. 6 synonyms for Acceptant: amenable, open, open-minded, receptive, responsive, acceptive

21. Ajar definition: slightly open synonyms: open, unfastened antonyms: shut, seal, lock

22. An open city open to attack Mnemonics (Memory Aids) for Assailable

23. ◦ 5.1 Open Admission

24. Open Access article:

25. Open-Geomorphometry Project

26. " Open your mouth. "

27. Open the bolt!

28. Open the back!

29. No open seats.

30. Browse more Open source resources in the developerWorks Open source zone.

31. Open tenders, open calls for tenders, or advertised tenders are open to all vendors or contractors who can guarantee performance.

32. Open an account.

33. Open your mouth.

34. Now, it's open.

35. OPEN-ANGLE GLAUCOMA

36. Now they're open.

37. Open the door

38. Open the vault!

39. [Open preview pane]

40. Open the door!

41. Open-hearth furnace

42. "Open Access Dissertations".

43. open gas jet.

44. Open the hatch.

45. Open the door.

46. Declaring open war.

47. Open your mouth!

48. Open the hood.

49. The pericardium's open!

50. It's open-season.