uncharacteristic (adjective) foreign: irrelevant
Sinonime: accidental, adventitious,
extraneous,
extrinsic,
heterogeneous, immaterial,
impertinent, inapposite,
incompatible,
incongruous,
inconsistent, inconsonant, irrelative,
repugnant, unassimilable, uncharacteristic, unrelated
Antonime: characteristic,
familiar,
known,
regular,
relevant