Synonyms For "Cracks" :
1 syllable:
ace, break, chap, check, cleft, fling, gap, go, pass, quip, shot, snap, tops, whirl
2 syllables:
break up, collapse, cracking, cranny, crevice, crock up, fissure, fracture, offer, sally, scissure, super, tiptop, topnotch, wisecrack