IPA: /ˈkrækɪər/
KK: /ˈkrækɪər/
Having more cracks or fissures than something else; more broken or damaged in appearance.
The crackier surface of the old road made it difficult to drive on.
Comparative: crackier
Superlative: crackiest
The word 'crackier' is derived from 'crack' (from Old English 'cracian', meaning to make a sudden sharp noise or to break) and the comparative suffix '-ier' (meaning more). Thus, 'crackier' means more prone to cracking or making a sharp noise than something else.
Think of something that makes a sharp noise or breaks ('crack') and remember that 'crackier' means it is more likely to do so.