deep

Synonyms: abysmal abyssal below beneath bottomless broad buried deep-seated distant downreaching far fathomless immersed inmost low profound rooted subaqueous submarine submerged subterranean sunk underground unfathomable wide yawning

Antonyms: shallow

Synonyms: abstruse acute arcane complex concealed delphic difficult discerning esoteric hard to understand heavy hermetic hidden incisive intricate learned mysterious obscure occult orphic penetrating profound recondite sagacious secret serious sibylline wise

Antonyms: frivolous ignorant shallow superficial trivial unintelligent

Synonyms: acute artful astute canny contriving crafty cunning designing foxy guileful insidious intriguing keen knowing plotting sharp shrewd sly tricky wily

Antonyms: aboveboard artless open

Synonyms: abstracted centered concentrated enfolded engaged fixed focused immersed intent into lost musing preoccupied rapt set wrapped wrapped up

Antonyms: flighty superficial

Synonyms: bass booming dark extreme full-toned grave great hard low low-pitched low-toned profound resonant rich sonorous strong vivid

Antonyms: light pale quiet soft

Synonyms: blue brine briny davy jones’s locker drink main middle ocean poseidon’s realm the high seas