unhasp

unhasp

(ʌnˈhɑːsp)
vb (tr)
to unfasten
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in classic literature ?
This time, I remembered I was lying in the oak closet, and I heard distinctly the gusty wind, and the driving of the snow; I heard, also, the fir bough repeat its teasing sound, and ascribed it to the right cause: but it annoyed me so much, that I resolved to silence it, if possible; and, I thought, I rose and endeavoured to unhasp the casement.
The window was unhasped. He signed to Rodney, who crossed the room immediately to put the matter right.
UNHASPED and ANTIMASK (w2) = 44.44 (NP) 53/35 (ANP)