whistle in the dark

US /ˈhwɪs.əl ɪn ðə dɑːrk/
UK /ˈhwɪs.əl ɪn ðə dɑːrk/
"whistle in the dark" picture
1.

siffler dans le noir, faire bonne figure

to try to make yourself feel more confident or less afraid by pretending to be brave or cheerful

:
He was just whistling in the dark, trying to convince himself that everything would be fine.
Il ne faisait que siffler dans le noir, essayant de se convaincre que tout irait bien.
Despite his brave words, I could tell he was just whistling in the dark about the company's future.
Malgré ses paroles courageuses, je pouvais dire qu'il ne faisait que siffler dans le noir concernant l'avenir de l'entreprise.