lizard brain

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Archived revision by Equinox (talk | contribs) as of 05:17, 15 April 2018.
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English

Noun

lizard brain (plural lizard brains)

  1. The most primitive part of the brain; the brain stem.
  2. (by extension) Any part of a person's psyche or personality dominated by instinct or impulse rather than rational thought.

Synonyms

  • (part of psyche or personality dominated by instinct or impulse): id, reptilian brain
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