self-conscious
US /ˌselfˈkɑːn.ʃəs/
UK /ˌselfˈkɑːn.ʃəs/

1.
gêné, mal à l'aise
feeling undue awareness of oneself, one's appearance, or one's actions
:
•
She felt self-conscious about her new haircut.
Elle se sentait gênée par sa nouvelle coupe de cheveux.
•
He was too self-conscious to speak in front of the crowd.
Il était trop gêné pour parler devant la foule.