open

  • (a) affording unobstructed entrance and exit; not shut or closed
    • an open door
    • they left the door open
    unfastened,
  • (a) affording free passage or access
    • open drains
    • the road is open to traffic
    • open ranks
  • (s) with no protection or shield
    • the exposed northeast frontier
    • open to the weather
    • an open wound
    exposed,
  • (s) open to or in view of all
    • an open protest
    • an open letter to the editor
  • (a) used of mouth or eyes
    • keep your eyes open
    • his mouth slightly opened
    opened,
  • (s) not having been filled
    • the job is still open
  • (s) accessible to all
    • open season
    • an open economy
  • (s) not defended or capable of being defended
    • an open city
    • open to attack
    assailable, undefendable, undefended,
  • (s) (of textures) full of small openings or gaps
    • an open texture
    • a loose weave
    loose,
  • (s) having no protecting cover or enclosure
    • an open boat
    • an open fire
    • open sports cars
  • (a) (set theory) of an interval that contains neither of its endpoints
  • (s) 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
    undecided, unresolved, undetermined,
  • (s) not sealed or having been unsealed
    • the letter was already open
    • the opened package lay on the table
    opened,
  • (s) without undue constriction as from e.g. tenseness or inhibition
    • the clarity and resonance of an open tone
    • her natural and open response
  • (a) ready or willing to receive favorably
    • receptive to the proposals
    receptive,
  • (a) open and observable; not secret or hidden
    • an overt lie
    • overt hostility
    • overt intelligence gathering
    • open ballots
    overt,
  • (s) not requiring union membership
    • an open shop employs nonunion workers
  • (s) 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
    subject, capable,
  • (s) affording free passage or view
    • a clear view
    • a clear path to victory
    • open waters
    • the open countryside
    clear,
  • (s) openly straightforward and direct without reserve or secretiveness
    • his candid eyes
    • an open and trusting nature
    • a heart-to-heart talk
    heart-to-heart, candid,
  • (s) ready for business
    • the stores are open

Nouns

  • (n) a clear or unobstructed space or expanse of land or water
    • finally broke out of the forest into the open
    clear,
  • (n) where the air is unconfined
    • he wanted to get outdoors a little
    • the concert was held in the open air
    • camping in the open
    open air, outdoors, out-of-doors,
  • (n) a tournament in which both professionals and amateurs may play
  • (n) information that has become public
    • all the reports were out in the open
    • the facts had been brought to the surface
    surface,

Verbs

  • (v) cause to open or to become open
    • Mary opened the car door
    open up,
  • (v) start to operate or function or cause to start operating or functioning
    • open a business
    open up,
  • (v) become open
    • The door opened
    open up,
  • (v) begin or set in action, of meetings, speeches, recitals, etc.
    • He opened the meeting with a long speech
  • (v) spread out or open from a closed or folded state
    • open the map
    • spread your arms
    spread, unfold, spread out,
  • (v) make available
    • This opens up new possibilities
    open up,
  • (v) become available
    • an opportunity opened up
    open up,
  • (v) have an opening or passage or outlet
    • The bedrooms open into the hall
  • (v) make the opening move
    • Kasparov opened with a standard opening
  • (v) afford access to
    • the door opens to the patio
    • The French doors give onto a terrace
    afford, give,
  • (v) display the contents of a file or start an application as on a computer

Synonyms

open up unfastened clear open air outdoors out-of-doors exposed surface spread unfold spread out opened assailable undefendable undefended loose afford give undecided unresolved undetermined receptive overt subject capable heart-to-heart candid

Antonyms

close shut unopen closed close down close up shut down fold fold up turn up unreceptive covert

See also

unfastened unsealed pioneer open up explicit expressed unconcealed public

Words of close approximity

OPEC Opel
Ops opt OPV
opah opal OPCW OPEC Opel opus
open account open air open-air open-air market open-air marketplace open-and-shut open-angle glaucoma openbill opencast opencast mining open chain open-chain open circuit open-class word open-collared opencut open door open-door policy opened open-end credit open-ended open-end fund open-end investment company open-end wrench opener open-eyed open-face sandwich open fire open fireplace open fracture open frame openhanded openhandedness openhearted open-hearth open-hearth furnace open-hearth process open-heart surgery open house opening opening line opening move opening night open interval open letter openly open marriage open-minded openmouthed openness open order open-plan open primary open sandwich open secret open sesame open shop openside plane open sight open society open-source Open University open up open weave openwork