stupid (EN)
adjective, adverb, noun

adjective “stupid”

stupid
  1. not smart or having good intelligence
    He failed the test because he made a stupid mistake.
  2. (of an action) not showing good judgment
    Jumping into the pool with your clothes on was a stupid idea.
  3. (informal) causing annoyance or irritation to the speaker
    This stupid alarm clock never goes off on time, making me late for work.

adverb “stupid”

stupid
  1. (slang) extremely
    This cake tastes stupid delicious.

noun “stupid”

sg. stupid, pl. stupids or uncountable
  1. (derogatory) used to address someone who you think did something that was not smart
    Come on, stupid, let's go home.