1. Descending far below the surface; opening or reaching to a great depth; deep. "A gulf profound." Milton.
2. Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough; as, a profound investigation or treatise; a profound scholar; profound wisdom.
3. Characterized by intensity; deeply felt; pervading; overmastering; far-reaching; strongly impressed; as, a profound sleep. "Profound sciatica." Shak.
"Of the profound corruption of this class there can be no doubt." -- Milman.
4. Bending low, exhibiting or expressing deep humility; lowly; submissive; as, a profound bow.
"What humble gestures! What profound reverence!" -- Duppa.