UNAWARES
short, unawares
(adverb) at a disadvantage; “I was caught short”
unawares
(adverb) suddenly and unexpectedly; “rain caught them unawares”; “sorrow comes to all, and to the young it comes with bittered agony because it takes them unawares”- A.Lincoln
unawares
(adverb) without forethought or plan; inadvertently; “came upon the diamond unawares”
Source: WordNet® 3.1
Etymology
Adverb
unawares (not comparable)
Unexpectedly or by surprise.
Inadvertently.
Without plan or forethought.
Source: Wiktionary
Un`a*wares", adv
Definition: , Without design or preparation; suddenly; without
premeditation, unexpectedly. "Mercies lighting unawares." J. H.
Newman.
Lest unawares we lose This our high place, our sanctuary, our hill.
Milton.
At unaware, or At unawares, unexpectedly; by surprise.
He breaks at unawares upon our walks. Dryden.
So we met In this old sleepy town an at unaware. R. Browning.
Source: Webster’s Unabridged Dictionary 1913 Edition