décontracté w języku angielskim

casual▼◼◼◼(designed for informal or everyday use)
adjective
[UK: ˈkæ.ʒʊəl] [US: ˈkæ.ʒə.wəl]

laid-back▼◼◼◻(relaxed and easy-going)
adjective

nonchalant▼◼◻◻(casually calm and relaxed)
adjective
[UK: ˈnɒn.ʃə.lənt] [US: ˌnɑːn.ʃə.ˈlɑːnt]