Synonyms of abyssal

1 Syllable
deep
2 Syllables
yachting, seagoing, shorer, deeper
3 Syllables
plutonic, downreaching, littoral, nautical, seaside, thalassic, cavernous, oceangoing, sea-loving, sailorly, abysmal, cimmerian, ocean-going, saltwater, neptunian
4 Syllables
natatorial, hydrographic
5 Syllables
oceanographic, immeasurable