Displaying insight or discrimination; acute; penetrating.
That can or does physically penetrate something; piercing, penetrating.
That can penetrate opposition defences.
Pertaining to sexual activity involving penetration by the penis.
Characterized by intensity; deeply felt; pervading
Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough
Very deep; very serious
Descending far below the surface; opening or reaching to great depth; deep.
Bending low, exhibiting or expressing deep humility; lowly; submissive