light-brain

A light-brain forgets his keys inside his own house.

Definition

1. Noun:
   • A foolish or unintelligent person: "light-brain" refers to an individual considered to have a shallow or empty mind, lacking intellectual depth or common sense. This term is archaic or informal and often used pejoratively.

Usage Examples

• Noun:
  • The old teacher dismissed the student as a light-brain after he failed the simplest test. (A person perceived as unintelligent.)
  • Don't be such a light-brain; you left your keys in the door again. (A foolish or careless person.)

Advanced Usage

• "to be a light-brain": to behave in a thoughtless or dim-witted manner.
  • He is such a light-brain that he cannot remember his own phone number. (He is extremely forgetful or foolish.)

Variants and Related Words

• Light-brained (adj): having a shallow or foolish mind.

  • Her light-brained remarks during the meeting embarrassed everyone. (Her comments showed a lack of intelligence.)

• Light-headed (adj): dizzy or faint; not directly related but shares "light" in a metaphorical sense.

  • After standing up too fast, she felt light-headed. (She felt dizzy.)

Synonyms

• Simpleton: a person lacking intelligence or common sense.
• Dunce: a person who is slow at learning.
• Blockhead: a stupid person.

Related Idioms

• Empty-headed: lacking intelligence or ideas.

  • He is so empty-headed that he cannot follow a simple conversation. (He is unintelligent.)

• Not the sharpest tool in the shed: not very intelligent.

  • She means well, but she's not the sharpest tool in the shed. (She is not very bright.)