Synonyms of hollowing

1 Syllable
cleft, void
2 Syllables
deep-set, vaulted, curved, sunken, mining, arched, quarrying, notched, vacant, cupped, dimpled, pitted, striated
3 Syllables
cup-shaped, incurved, troughlike, indented, concave, cavernous, depressed, unfilled
4 Syllables
alveolate, excavated
5 Syllables
infundibular