#nervous_strain__nervousstrain__strain__mental_strain  nervousness resulting from mental stress; "his responsibilities were a constant strain"; "the mental strain of staying alert hour after hour was too much for him"
  supertype:  #jitters__jitter__nervousness__nervousnes__nerve__screaming_meemies__screamingmeemie  an uneasy state; "he suffered an attack of nerves"
  subtype:  #tenseness__tensenes__stress  a state of mental or emotional strain or suspense; "he suffered from fatigue and emotional tension"; "stress is a vasoconstrictor"
     subtype:  #breaking_point.tenseness__breakingpoint  stress at which a person breaks down or a situation becomes crucial

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