|Part of Speech:
||without warning; suddenly|
accidentally, by accident, by mistake, by surprise, carelessly, ignorantly,
inadvertently, mistakenly, off guard,
sudden, surprisingly, unconsciously,
unexpectedly, unintentionally, unknowingly, unprepared, unready, unwittingly
||unaware is an adjective that means 'not being aware of something' and unawares is an adverb meaning 'by surprise; unexpectedly'