feeblish

feeblish

(ˈfiːblɪʃ)
adj
somewhat feeble
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 ?
But down below he is not so good by any means--no spring from the loins, and feeblish, not to say shipwrecky, about the knees.