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Synonyms for balloon

noun

dirigible, aircraft, airship, weather balloon, nondirigible aerostat, montgolfier, free balloon, captive balloon, kite balloon, lighter-than-air craft, toy balloon, zeppelin, observation balloon, barrage balloon, radar balloon, blimp*, bag*, sausage*, gasbag*, zep*.

verb

bloat, swell up, expand; see inflate 2.

See balloon in Webster's New World Roget's A-Z Thesaurus II

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