moronic
adj. C1 Advanced UK //mɔːɹˈɒnɪk// mo·ron·ic
adj. extremely stupid or showing a lack of intelligence. You use this word to describe someone who is acting in a very foolish way.
adj. characterised by extreme stupidity or a lack of intelligence. Highly informal and often considered offensive when directed at a person.
It was a moronic mistake to leave the keys in the car.
The politician's moronic comments on the economy were widely mocked by the press and the public.
While the plot was technically sound, the script was ruined by moronic dialogue that failed to match the intelligence of the characters.
From moron + -ic.