Antonyms for Loosen Up | Loosen Up at Open Dictionary of English by LearnThat Foundation

Antonyms for Loosen Up (opposite meaning)

WordNet sense 1 (obstruct):

block, lug, stuff, choke up

WordNet sense 2 (become tense, nervous, or uneasy):

tense, tense up

WordNet sense 3 (cause to be tense and uneasy or nervous or anxious):

strain

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