deepest

diːp

adjective

extending far down from the top or surface.

a deep gorge

extending far down,cavernous,yawning,gaping,huge,big,great,extensive,profound,unplumbed,bottomless,immeasurable,fathomless,unfathomable,chasmic

SYNONYMS

bigbottomlesscavernouschasmicextending far downextensivefathomlessgapinggreathugeimmeasurableprofoundunfathomableunplumbedyawning