tweeledig angolul

dual▼(having two components)
adjective
[UK: ˈdjuːəl] [US: ˈduːəl]

dyadic▼(pertaining to the number two)
adjective
[UK: ˈdaɪæd] [US: ˈdaɪæd]

twofold▼(double)
adjective
[UK: ˈtuː.fəʊld] [US: ˈtuːfoʊld]