désinvolte znamená v Angličtina

casual▼◼◼◼(careless)
adjective
[UK: ˈkæ.ʒʊəl] [US: ˈkæ.ʒə.wəl]His very person and appearance were such as to strike the attention of the most casual observer. = Sa personne et son apparence même étaient de nature à attirer l'attention de l'observateur le plus désinvolte.

glib [glibber, glibbest]▼◼◼◼(having a ready flow of words but lacking thought or understanding)
adjective
[UK: ɡlɪb] [US: ˈɡlɪb]

flippant▼◼◼◻(lacking respect)
adjective
[UK: ˈflɪ.pənt] [US: ˈflɪ.pənt]

nonchalant▼(indifferent; unconcerned; behaving as if detached)
adjective
[UK: ˈnɒn.ʃə.lənt] [US: ˌnɑːn.ʃə.ˈlɑːnt]