English Explanatory Dictionary

lizard brain

English dictionary entry

Meanings

noun

The most primitive part of the brain; the brain stem.
Any part of a person's psyche or personality dominated by instinct or impulse rather than rational thought.
Any part of a person's mind concerned with automatic, repetitive tasks rather than emotion.

Word forms

lizard brain lizard brains

Synonyms

id reptilian brain

Derived words

lizard-brained

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