English
Etymology
From baby + brained.
Adjective
baby-brained (comparative more baby-brained, superlative most baby-brained)
- (colloquial, derogatory) Extremely stupid; dumb, idiotic.
- Synonyms: see Thesaurus:stupid
- (colloquial, slang, figurative) Having the mindset or outlook of a baby or toddler; immature, childish, infantile.