open

I
(New American Roget's College Thesaurus)
adj. unclosed (see opening); unfilled, unengaged; free, public; unrestrained, unrestricted; frank, overt; spread out, unfolded, revealed. —v. unfasten; unfold, spread out; reveal, disclose; start, initiate, commence. See truth, disclosure.Ant., close(d).
II
(Roget's IV) modif.
1. [Not closed]
Syn. unclosed, accessible, clear, open to view, uncovered, disclosed, divulged, introduced, initiated, inaugurated, begun, full-blown, unfurled, susceptible, ajar, agape, gaping, yawning, wide, rent, torn, spacious, broad gauge, unshut, expansive, extensive, spread out, vistaed, revealed, unenclosed; see also senses 2, 4.
Ant. tight*, closed, shut.
2. [Not obstructed]
Syn. unlocked, unbarred, unbolted, unlatched, unblocked, unfastened, cleared, removed, made passable, unsealed, unobstructed, unoccupied, vacated, unburdened, emptied; see also sense 1.
Ant. taken*, barred, blocked.
3. [Not forbidden]
Syn. free, unrestricted, permitted, allowable, free of access, public, welcoming, not posted; see also admissible , permitted .
Ant. refused*, restricted, forbidden.
4. [Not protected]
Syn. unguarded, unsecluded, liable, exposed, out in the weather, uncovered, apart, fallen open, unshut, unroofed, insecure, unsafe, conspicuous, unhidden, unconcealed, subject, sensitive; see also sense 1, unsafe .
Ant. safe*, secluded, secure.
5. [Not decided]
Syn. in question, up for discussion, debatable; see controversial , questionable 1 , uncertain 2 .
6. [Not solid]
Syn. airy, fretted, fretworked, openworked, intersticed, filigree; see also penetrable .
Ant. firm*, solid, impenetrable.
7. [Frank]
Syn. plain, candid, straightforward; see frank .
8. [Obvious]
Syn. apparent, well-known, clear; see obvious 1 .
See Synonym Study at frank . v.
1. [To begin]
Syn. start, inaugurate, initiate; see begin 1 , 2 .
2. [To move aside a prepared obstruction]
Syn. unbar, unlock, unclose, clear, admit, turn back, reopen, open the lock, lift the latch, free, loosen, disengage, throw open, lay open, swing wide, unfasten, undo, unbolt, throw back the bolt, turn the key, turn the knob.
Ant. close*, shut, lock.
3. [To make an opening]
Syn. force an entrance, breach, make an aperture, cut in, tear down, push in, shatter, destroy, burst in, break open, cave in, burst out from, penetrate, cleave, pierce, force one's way into, smash, prick, punch a hole into, slit, puncture, crack, muscle in*, jimmy*; see also force 2 , remove 1 .
Ant. repair*, seal, mend.
4. [To make available]
Syn. make accessible, put on sale, put on view, open to the public, make public, put forward, free, make obtainable, make usable, prepare, present, make convenient, make ready.
Ant. remove*, put away, lock up.
5. [To begin business]
Syn. open for business, hang out one's shingle, receive business, go into business, set up shop, get to work.
6. [To expose to fuller view]
Syn. unroll, unfold, uncover; see expose 1 , reveal 1 .
III
(Roget's 3 Superthesaurus)
I
v.
1. to make an opening unlock, unlatch, undo, unseal, unscrew, uncork, loosen, free, untie, breach, broach, tear down, puncture, slit, pierce, rupture.
2. spread unfold, unfurl, unroll, lay out.
3. begin commence, start, inaugurate, initiate, launch, *get the ball rolling.
ANT.: 1. close, shut, cover, stop up, seal. 2. fold, roll up, ball up. 3. end, close, finalize
II
a.
1. unclosed unsealed, accessible, agape, unlocked, unobstructed, ajar, clear, yawning.
2. exposed uncovered, unprotected, open to view, unenclosed, unconcealed.
3. spread out unfolded, unfurled, unrolled, laid out.
4. open to the public accessible, open for business, in operation, ready to serve.
5. fair-minded receptive, open-minded, unbiased, unprejudiced.
6. honest or candid frank, sincere, blunt, communicative, revealing, disclosing, intimate, *real.
ANT.: 1. closed, shut, sealed, unaccessible. 2. covered, hidden, enclosed, concealed. 3. folded, bunched up. 4. closed. 5. close-minded, narrow-minded, biased. 6. reserved, uncommunicative, secretive
IV
(Roget's Thesaurus II) I adjective 1. Free from obstructions: clear, free, unblocked, unimpeded, unobstructed. See OPEN. 2. Having no protecting or concealing cover: exposed, uncovered, unprotected. See PROTECTION. 3. Not restricted or confined to few: open-door, public, unrestricted. See OPEN. 4. Tending to incur: liable, prone, subject, susceptible, susceptive, vulnerable. See LIKELY. 5. Ready and willing to receive favorably, as new ideas: acceptant, amenable, open-minded, receptive, responsive. See ACCEPT. 6. Available for use: accessible, employable, operable, operative, practicable, usable, utiliza-ble. See POSSIBLE. 7. Not spoken for or occupied: free, uninhabited, unoccupied, unreserved. See OWNED. 8. Marked by lack of firm decision or commitment; of questionable outcome: indefinite, uncertain, undecided, undetermined, unresolved, unsettled, unsure, vague. Idiom: up in the air. See CERTAIN. 9. Manifesting honesty and directness, especially in speech: candid, direct, downright, forthright, frank, honest, ingenuous, man-toman, plainspoken, straight, straightforward, straight-out, unreserved. Informal: straight-from-the-shoulder, straight-shooting. See CLEAR, SHOW. II verb 1. To become or cause to become open: unclose, undo. See OPEN. 2. To rid of obstructions: clear, free, unblock. See OPEN. 3. To move or arrange so as to cover a larger area. Also used with out or up: expand, extend, fan (out), outstretch, spread, stretch, unfold, unroll. See MOVE. 4. To go about the initial step in doing (something): approach, begin, commence, embark, enter, get off, inaugurate, initiate, institute, launch, lead off, set about, set out, set to, start, take on, take up, undertake. Informal: kick off. Idioms: get cracking, get going, get the show on the road. See START.

English dictionary for students. 2013.

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