| Main Entry: | |
| Part of Speech: | noun |
| Definition: | blocking object |
| Synonyms: | bar, barrier, blank wall, block, blockade, bulwark, fence, obstruction, palisade, rampart, roadblock, stockade, stop, wall |
| Antonyms: | opening |
| Main Entry: | bar |
| Part of Speech: | noun |
| Definition: | barrier; blockage |
| Synonyms: | barricade, blank wall, block, clog, deterrent, encumbrance, fence, hindrance, hurdle, impediment, obstacle, obstruction, pale, rail, railing, restraint, road block, snag, stop, stumbling block, traverse, wall |
| Antonyms: | advantage, aid, help |
| 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: | barrier |
| Part of Speech: | noun |
| Definition: | obstruction |
| Synonyms: | bar, barricade, blank wall, blockade, bound, boundary, confines, curtain, ditch, enclosure, fence, fortification, gully, hurdle, impediment, limit, moat, obstacle, pale, palisade, railing, rampart, roadblock, stop, trench, wall |
| Antonyms: | opening |
| Main Entry: | block |
| Part of Speech: | verb |
| Definition: | obstruct |
| Synonyms: | arrest, bar, barricade, block out, blockade, brake, catch, charge, check, choke, clog, close, close off, close out, congest, cut off, dam, deter, fill, halt, hang up, hinder, hold up, impede, intercept, interfere with, occlude, plug, prevent, shut off, shut out, stall, stonewall, stop, stop up, stopper, stymie, tackle, take out of play, thwart |
| Notes: | a bloc is a group of countries in special alliance while a block is an obstruction, an interruption, or a rectangular area or shape |
| Antonyms: | let go, let up, open, unblock |
| Main Entry: | blockade |
| Part of Speech: | noun |
| Definition: | barrier |
| Synonyms: | bar, barricade, blank wall, clog, closure, embolus, encirclement, hindrance, impediment, infarct, infarction, obstacle, obstruction, restriction, roadblock, siege, snag, stop, stoppage, wall |
| Antonyms: | opening |
| Main Entry: | dam |
| Part of Speech: | verb |
| Definition: | hold back; block |
| Synonyms: | bar, barricade, brake, check, choke, clog, close, confine, hinder, hold in, impede, obstruct, repress, restrain, restrict, retard, slow, stop up, suppress |
| Notes: | a dam is a barrier constructed to contain the flow of water while damn is used as an expletive meaning cursed, condemned to hell |
| Antonyms: | free, let go, liberate, release, unblock, unclog, unloose |
| Main Entry: | defense |
| Part of Speech: | noun |
| Definition: | armament; protection system |
| Synonyms: | aegis, armor, arms, barricade, bastille, bastion, bulwark, buttress, citadel, cover, deterrence, dike, embankment, fastness, fence, fort, fortification, fortress, garrison, guard, immunity, munitions, palisade, parapet, position, protection, rampart, redoubt, resistance, safeguard, security, shelter, shield, stockade, stronghold, trench, wall, ward, warfare, weaponry, weapons |
| Antonyms: | desertion, flight, surrender |
| Main Entry: | difficulty |
| Part of Speech: | noun |
| Definition: | problem; situation requiring great effort |
| Synonyms: | adversity, arduousness, awkwardness, barricade, check, complication, crisis, crux, dead end, deadlock, deep water, dilemma, distress, emergency, exigency, fix*, frustration, hardship, hazard, hindrance, hitch*, hot water, impasse, knot*, labor, laboriousness, mess, misfortune, muddle, obstacle, obstruction, pain, painfulness, paradox, perplexity, pickle, predicament, quagmire, quandary, scrape*, snag*, stew, strain, strait, strenuousness, struggle, stumbling block, tribulation, trouble |
| Antonyms: | calm, ease, felicity, peace, tranquility |