This is the 9159th most frequent French word.
cons
"Cons" in French is a vulgar term meaning "idiots" or "jerks."
'Cons' here colloquially means 'stupid' in a mildly offensive way, often used in casual speech to criticize someone’s decision or action.
Ils sont vraiment cons de ne pas avoir vérifié la météo avant de partir.
They are really stupid for not checking the weather before leaving.
In this sentence, 'con' is used to express that something is perceived as unreasonable or lacking foresight.
Je trouve ça con qu'il n'ait pas partagé les résultats avec nous.
I find it dumb that he didn't share the results with us.
'Con' serves as an informal way to say 'foolish' here, advising someone against acting unwisely.