adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Having the form of a cave not-comparable
2. 2
   subterranean, especially in the case of passages, bridges. not-comparable
3. 3
   traversed by a long passage. not-comparable

Synonyms

All synonyms

subterranean

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.