noun, masculine/pə.ti mɔ̃d/plural: petits mondes
petit monde is masculine in French.
small world, small group (category with few members); child
“Ces débats et polémiques qui ont agité le sport en 2018, Le Monde, December 27, 2018” — After having divided the small world of Spanish soccer throughout this fall, this project will ultimately not see the light of day.