IPA: /ˈrɒk.i.ər/
KK: /ˈrɑːkiər/
Having many rocks or being uneven and rough; this form indicates a greater degree of this quality compared to the base form.
The path became rockier as we climbed higher up the mountain.
Comparative: rockier
Superlative: rockiest
Rockier → It is formed from "rock" (from Old English *rocc*, meaning a large stone or boulder) and the suffix "-ier" (meaning more). The word "rockier" means having more rocks or being more rocky than something else.
Think of a place that has 'more rocks' ('-ier') than another — that's what rockier means.