In a way that is out of its proper historical time or seems to belong to a different era.
Adverbial form of anachronistical, derived from Greek ana- (against) plus chronos (time), with the adverbial suffix -ally added to create an adverb form.
When a TV show set in medieval times shows characters with modern hairstyles or tattoos, they're anachronistically breaking the historical setting—directors sometimes do this intentionally for modern audiences to relate better!
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