As adjectives the difference between hilliest and pilliest
is that hilliest is (hilly) while pilliest is (pilly).
hilliest
English
Adjective
(head)
(hilly)
hilly
English
Adjective
(er)
(of a landscape) Abundant in hills; having many hills.
pilliest
English
Adjective
(head)
(pilly) pilly
English
Adjective
(
er)
Covered in pills (particles created by mechanical wear).
- After many washings, my favorite sweater is faded and pilly .