Wiktionary
pantless
a. (context US English) Not wearing pants (trousers).
Usage examples of "pantless".
McNeal turned slowly at a light touch on his shoulder and looked up into the wide eyes of the pantless boy.
McNeal sat up and gently wiped the face of the pantless boy with a bandanna.
Swain staggered into view, pantless, shirttails flapping in the wind, wildly searching the parking lot.