subaquarian

English

Etymology

sub- +‎ aquarian

Adjective

subaquarian (comparative more subaquarian, superlative most subaquarian)

1. Lying below the surface of the water; submarine.
   • 1974, John Boorman, Zardoz, London: Pan Books, page 86:

     There they stool, still lost in some subaquarian fog, moving towards him so slowly that he could perceive no motion[.]