unawares

adverbs

without forethought or plan; inadvertently
"came upon the diamond unawares"
unawares
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
at a disadvantage
"I was caught short"
short, unawares