pick at

US /pɪk æt/
UK /pɪk æt/
"pick at" picture
1.

picorer, manger sans enthousiasme

eat food slowly and without much enthusiasm

:
She was so upset that she could only pick at her dinner.
Elle était si bouleversée qu'elle ne pouvait que picorer son dîner.
He's been picking at his food all evening.
Il n'a fait que picorer sa nourriture toute la soirée.
2.

critiquer, reprocher

criticize someone or something repeatedly, especially in a petty or annoying way

:
She's always picking at his grammar.
Elle est toujours en train de critiquer sa grammaire.
Don't pick at every little mistake I make.
Ne critique pas chaque petite erreur que je fais.