hang-up

Noun
  1. An emotional preoccupation (synset 105713431)
    domain usage: colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
    is a type of: preoccupation - an idea that preoccupies the mind and holds the attention
  2. An unforeseen obstacle (synset 105699109)
    is a type of: obstacle, obstruction - something immaterial that stands in the way and must be circumvented or surmounted
    same as: hitch, rub, snag

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