trentaine
/tʁɑ̃.tɛn/
1.
nounfeminineSing
about thirty
roughly thirty (items or people)
Il y avait une trentaine de personnes à la soirée.
There were about thirty people at the party.
Synonyms:environ trente, quelque trente
2.
nounfeminineSing
the thirties (age range, i.e., being between about 30 and 39)
Elle approche de la trentaine.
She is approaching her thirties.
Synonyms:la trentaine d'années, dans la trentaine
