1. Showing a lack of intelligence or thought; stupid and silly
   - asinine, inane, mindless, vacuous

See also: fatuousness, foolish

• at last
• at least
• at leisure
• at length
• at loggerheads
• at long last
• at most
• at odds
• at once
• at one time
• at peace
• at present
• at random
• at rest
• at sea
• at sixes and sevens
• at stake
• at that place
• at the best
• at the drop of a hat
• at the least
• at the most
• at the ready
• at the same time
• at the worst