From Wiktionary, the free dictionary
From porcupine + -ish.
porcupinish (not comparable)
- Resembling or characteristic of a porcupine or its spines; defensive, prickly.
1971, Phyllis Greenacre, Emotional Growth, page 475:He is described as prickly and porcupinish, but obviously gets beyond this stage of irritability.
