IPA: /ˈkræɡiər/
KK: /ˈkræɡiər/
Having many steep rocks or cliffs; rough and uneven in appearance.
The craggier mountains were more challenging to climb than the smooth hills.
Comparative: craggier
Superlative: craggiest
Craggier is derived from "crag" (from Old English "crag", meaning a steep or rugged cliff) and the comparative suffix "-ier" (meaning more). The word "craggier" describes something that is more rugged or steep than something else.
Think of a 'crag' as a steep cliff, and when something is 'craggier', it means it has even more rugged features than before.