unfattable
adjEtymology From un- + fat + -able.
1
Archaic That cannot be fattened; unfattenable.
- Hogs are also advantageous, when they can be brought through the winter without the ravages of any annual distemper; but where they are in a broken, unequal, and consequently unfattable state, dinmonting them becomes necessary […]1803, The Farmer's Magazine, volume 4, page 399: