Adverb
Without design or preparation; suddenly; without premeditation, unexpectedly.
Source: Webster's dictionaryBe not forgetful to entertain strangers: for thereby some have entertained angels unawares. Paul
The loathing of mankind is a force that surprises and overwhelms one, fed by hundreds of springs concealed his subconsciousness. One only detects its presence after having long entertained it unawares. Georg Brandes
The hour of death waits for no order. Death does not even come from the front. It is ever pressing on from behind. All men know of death, but they do not expect it of a sudden, and it comes upon them unawares. So, though the dry flats extend far out, soon the tide comes and floods the beach. Yoshida Kenkō
Whilst we drink, prank ourselves, with wenches daily, Old age upon's at unawares doth sally. Spanish Proverb
Whilst we drink, prank ourselves, with wenches daily, Old age upon's at unawares doth sally. Portuguese Proverb
He that handles thorns unawares may smart for it. Turkish Proverb