brainless

Adjective

1. Having no brain.
   • Surely it was more likely that a brainless creature, acting solely by vague predatory instinct, would give up the chase when I disappeared, and, after a pause of astonishment, would wander away in search of some other...

   Synonyms: anencephalous

2. Unintelligent, with little common sense.
   • "I don't mean all of your friends—only a small proportion—which, however, connects your circle with that deadly, idle, brainless bunch—the insolent chatterers at the opera, the gorged dowagers, the worn-out, passionless...

   Synonyms: half-brained half-witted addlebrained addlepated airheaded bee-brained beef-witted beefheaded beetle-headed birdbrained blockheaded Boeotian boneheaded boofheaded braindead brainless bubbleheaded buffle-headed bullet-headed cerebrally challenged childish chowderheaded chuckleheaded crackbrained

   Antonyms: brainy

   Coordinate Terms: mindless

3. Overly repetitive and unchallenging, not requiring any careful attention or providing any significant stimulation.
   • Near-synonyms: automatic, rote, dull

   Synonyms: mindless automatic rote dull

   Antonyms: engrossing