| Main Entry: | |
| Part of Speech: | noun |
| Definition: | device that fastens and bars free passage |
| Synonyms: | bar, bolt, bond, catch, clamp, clasp, clinch, connection, fastening, fixture, grapple, grip, hasp, hook, junction, latch, link, padlock |
| Antonyms: | key |
| Main Entry: | assurance |
| Part of Speech: | noun |
| Definition: | statement to relieve doubt |
| Synonyms: | affirmation, assertion, declaration, guarantee, insurance, lock on, lock*, oath, pledge, profession, promise, rain or shine, security, shoo-in, support, sure thing, vow, warrant, warranty, word, word of honor |
| Antonyms: | distrust, doubt |
| Main Entry: | assure |
| Part of Speech: | verb |
| Definition: | make certain |
| Synonyms: | cinch, clinch, complete, confirm, ensure, guarantee, have a lock on, ice*, insure, lock, lock on, lock up, make sure, nail down, put on ice, seal, secure, set |
| Main Entry: | bar |
| Part of Speech: | verb |
| Definition: | secure, usually with a length of material |
| Synonyms: | barricade, block, blockade, bolt, caulk, clog, close, dam, deadbolt, dike, fasten, fence, jam, latch, lock, plug, seal, secure, trammel, wall |
| Antonyms: | loosen, open, unfasten |
| Main Entry: | bolt |
| Part of Speech: | noun |
| Definition: | lock; part of lock |
| Synonyms: | bar, brad, catch, coupling, dowel, fastener, lag, latch, lock, nut, padlock, peg, pin, pipe, rivet, rod, screw, skewer, sliding bar, spike, stake, staple, stud |
| Antonyms: | key |
| Main Entry: | bolt |
| Part of Speech: | verb |
| Definition: | fasten securely |
| Synonyms: | bar, deadbolt, latch, lock, secure |
| Antonyms: | loosen, open, unbolt, unfasten, unlock |
| Main Entry: | certainty |
| Part of Speech: | noun |
| Definition: | positive assurance |
| Synonyms: | all sewn up, authoritativeness, belief, certitude, cinch, confidence, conviction, credence, definiteness, dogmatism, faith, firmness, indubitableness, inevitability, lock*, lockup, open and shut case, positiveness, positivism, rain or shine, setup, shoo-in, staunchness, steadiness, stock, store, sure bet, sure thing, surefire, sureness, surety, trust, validity, wrap-up |
| Notes: | certitude is a measure of a person's positive feeling about something; certainty is a measure of the degree to which a process or development may be realized |
| Antonyms: | ambiguity, doubt, hesitation, questionableness, uncertainty |
| Main Entry: | clamp |
| Part of Speech: | noun |
| Definition: | fastener |
| Synonyms: | bracket, catch, clasp, grip, hold, lock, nipper, press, snap, vice |
| Main Entry: | close |
| Part of Speech: | verb |
| Definition: | obstruct, seal |
| Synonyms: | bang, bar, block, bolt, button, caulk, choke, clap, clench, clog, confine, congest, cork, dam, exclude, fasten, fill, lock, occlude, plug, prevent passage, put to, retard flow, screen, secure, shut, shut off, shutter, slam, stop up, stopper, stuff, turn off |
| Antonyms: | open, release, unclose, unplug, unseal, unstop |