- profoundDescending far below the surface; opening or reaching to great depth; deep.
- profundaA deep-seated artery, as of the arm, neck, or leg.
- profundalRelating to the deep zone of an inland body of water where very little sunlight penetrates; located between the limnetic and the benthic zones.
- profundicateTo make profound; to make a concept unnecessarily complicated.
- profundifyTo make profound; to make a concept unnecessarily complicated.