unusual Definition

1. Not usual; uncommon; rare.

Thesaurus: phenomenal, extraordinary, remarkable, singular, strange, different, eccentric, peculiar, rare, uncommon, bizarre, abnormal, odd, atypical, unconventional; Antonym: ordinary.

In a way or to a degree that is uncommon or exceptional
Thesaurus: strangely, oddly, peculiarly, curiously, especially.