disinvolto bedeutet auf Englisch

cool [cooler, coolest]▼(colloquial: of a person, knowing what to do and how to behave in any situation)
adjective
[UK: kuːl] [US: ˈkuːl]John looks cool. = John sembra disinvolto.

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