open

Adjective

• ready for business
  • the stores are open
    

• openly straightforward and direct without reserve or secretiveness
  • his candid eyes
    
  • an open and trusting nature
    
  • a heart-to-heart talk
    

• affording free passage or view
  • a clear view
    
  • a clear path to victory
    
  • open waters
    
  • the open countryside
    

• 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
    

• not requiring union membership
  • an open shop employs nonunion workers
    

• open and observable; not secret or hidden
  • an overt lie
    
  • overt hostility
    
  • overt intelligence gathering
    
  • open ballots
    

• ready or willing to receive favorably
  • receptive to the proposals
    

• without undue constriction as from e.g. tenseness or inhibition
  • the clarity and resonance of an open tone
    
  • her natural and open response
    

• not sealed or having been unsealed
  • the letter was already open
    
  • the opened package lay on the table
    

• 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
    

• (set theory) of an interval that contains neither of its endpoints

• having no protecting cover or enclosure
  • an open boat
    
  • an open fire
    
  • open sports cars
    

• (of textures) full of small openings or gaps
  • an open texture
    
  • a loose weave
    

• not defended or capable of being defended
  • an open city
    
  • open to attack
    

• accessible to all
  • open season
    
  • an open economy
    

• not having been filled
  • the job is still open
    

• used of mouth or eyes
  • keep your eyes open
    
  • his mouth slightly opened
    

• open to or in view of all
  • an open protest
    
  • an open letter to the editor
    

• with no protection or shield
  • the exposed northeast frontier
    
  • open to the weather
    
  • an open wound
    

• affording free passage or access
  • open drains
    
  • the road is open to traffic
    
  • open ranks
    

• affording unobstructed entrance and exit; not shut or closed
  • an open door
    
  • they left the door open
    

Verb

• display the contents of a file or start an application as on a computer

• afford access to
  • the door opens to the patio
    
  • The French doors give onto a terrace
    

• make the opening move
  • Kasparov opened with a standard opening
    

• have an opening or passage or outlet
  • The bedrooms open into the hall
    

• become available
  • an opportunity opened up
    

• make available
  • This opens up new possibilities
    

• spread out or open from a closed or folded state
  • open the map
    
  • spread your arms
    

• begin or set in action, of meetings, speeches, recitals, etc.
  • He opened the meeting with a long speech
    

• become open
  • The door opened
    

• start to operate or function or cause to start operating or functioning
  • open a business
    

• cause to open or to become open
  • Mary opened the car door
    

Noun

• information that has become public
  • all the reports were out in the open
    
  • the facts had been brought to the surface
    

• a tournament in which both professionals and amateurs may play

• where the air is unconfined
  • he wanted to get outdoors a little
    
  • the concert was held in the open air
    
  • camping in the open
    

• a clear or unobstructed space or expanse of land or water
  • finally broke out of the forest into the open
    

Related words

• Synonyms: 
  candid , heart-to-heart , clear , capable , subject , open(a) , overt , receptive , opened , undecided , undetermined , unresolved , loose , assailable , undefendable , undefended , exposed , unfastened , afford , give , open up , unfold , spread , spread out , surface , outdoors , out-of-doors , open air
• Antonyms: 
  covert , unreceptive , closed , shut , unopen , close , fold , fold up , turn up , close up , shut down , close down