knock on

• Frapper à une surface (par exemple une porte) avec les doigts repliés pour attirer l'attention ou demander la permission d'entrer ; également utilisé au sens figuré pour désigner le fait de se rapprocher d'une situation ou d'une possibilité.

To strike a surface (such as a door) with the knuckles to gain attention or request entry; also used figuratively to mean approaching a situation or opportunity.

1. Strike a surfaceA1formal

   To hit a surface, typically a door, with the knuckles to gain attention or request entry.

   frapper à

   • Please knock on the door before entering.
   • He knocked on the window to get her attention.
   • She knocked on the table to signal the start of the meeting.

2. Criticize or find faultB2informal

   To express negative opinions or criticism about someone or something.

   critiquer, dénigrer

   • Stop knocking on his efforts; he's trying his best.
   • Critics are always knocking on the new policy.
   • She tends to knock on everything she doesn't understand.