brainless

brainless — adjective

1. very stupid, showing almost no clear thought in what a person says or does.

1.形容詞C1
釋義

very stupid, showing almost no clear thought in what a person says or does.

例句

The host made brainless jokes that left the studio audience silent.

brainless jokes (silly, empty talk)

Riku sounded brainless on the radio when he forgot the team's name.

sound + brainless

同義詞
  • stupid

    the broad everyday word; less vivid than 'brainless'

  • idiotic

    stronger and angrier, often used when someone is very annoyed

  • dim-witted

    focuses more on being slow to understand

  • empty-headed

    informal and mocking, especially about silly talk

反義詞
  • intelligent

    having the ability to think clearly and understand well

  • sharp

    informal; suggests quick, accurate thinking

  • sensible

    stresses sound thinking rather than raw ability

文法句型

a brainless + noun

be/seem/sound + brainless

用法筆記

Often used as an insult for a person's speech, media, or behaviour, not as a neutral description of low ability. Distinguish from sense 2 (WITHOUT THINKING): sense 1 attacks intelligence itself.

常見錯誤

❌Kenji is brainless in math.
✅Kenji is bad at math.' or 'Kenji sounds brainless when he talks about math.
💡'brainless' is a strong insult, not a neutral way to say someone is weak in one subject.
❌The plan is brainless, so it must be easy.
✅The plan is simple, so it must be easy.
💡'brainless' means stupid, not easy or uncomplicated.

2. showing that someone did not stop to think about the likely result or about othe

2.形容詞C1
釋義

showing that someone did not stop to think about the likely result or about other people.

例句

Posting the class photo online without asking anyone was brainless.

be brainless about an action

Noa made a brainless remark about Hana's accent during lunch.

brainless remark (hurtful, unthinking comment)

同義詞
  • thoughtless

    the closest match when someone fails to consider other people

  • careless

    focuses more on lack of attention than on cruelty or poor judgment

  • rash

    stresses acting too quickly before thinking

  • insensitive

    focuses especially on hurting other people's feelings

反義詞
  • thoughtful

    showing that someone has considered people and results carefully

  • considerate

    stresses care for other people's feelings or needs

  • careful

    emphasizes attention and caution before acting

文法句型

a brainless + remark/decision/mistake

be + brainless

用法筆記

Usually describes a remark, choice, or action whose problem is poor judgment. Distinguish from sense 1 (LOW INTELLIGENCE): sense 2 often criticizes one unthinking moment rather than a person's mental ability.

常見錯誤

❌The broken printer is brainless.
✅Leaving the printer broken for two weeks was brainless.
💡sense 2 describes a foolish action or decision, not an object by itself.
❌Her comment was brainless because it was hard to understand.
✅Her comment was brainless because it was cruel and she had not thought first.
💡here the idea is thoughtlessness, not simply unclear speech.