Dictionary

put a brave face on en · VERB

(idiomatic) To present oneself as calm, confident, or untroubled in the face of difficulty, disappointment, fear or adversity.
- Nevertheless De Comines put a brave face on the matter, and told the council that he had already received information of the league and had sent dispatches to his master on the subject. 'After dinner,' continues De Comines, […] 2022 December 10, John Addington Symonds, The Renaissance in Italy (Complete 7 Volumes), DigiCat:

Spelling	Features	Source
puts a brave face on	Number=Sing, Person=3, Tense=Pres	lexicographic
put a brave face on	Tense=Past, VerbForm=Part	lexicographic
put a brave face on	Tense=Past	lexicographic
putting a brave face on	Tense=Pres, VerbForm=Part	lexicographic