checker

A very common informal anglicism among younger French speakers, borrowed from English 'to check' — checker ses mails (to check one's email), checker un truc (to verify or look something up). Purists prefer vérifier in formal writing, but checker dominates casual speech and texting.

• Je vais checker mes mails avant de partir. — I'm going to check my emails before I leave.
• T'as checké l'horaire du train ? — Did you check the train schedule?
• On checke ça et je te dis. — We'll check that and I'll let you know.

Checker is strictly informal/spoken register — using it in a formal email or written report where vérifier or contrôler would be expected reads as too casual, even slangy.