size up
US /saɪz ʌp/
UK /saɪz ʌp/

1.
évaluer, jauger
to assess or evaluate a person or situation
:
•
He tried to size up his opponent before the match.
Il a essayé de jauger son adversaire avant le match.
•
She quickly sized up the situation and knew what to do.
Elle a rapidement évalué la situation et su quoi faire.