external; separable from the thing itself; inessential
not belonging to something; outside
An external factor
Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough
Very deep; very serious
Characterized by intensity; deeply felt; pervading
Descending far below the surface; opening or reaching to great depth; deep.
Bending low, exhibiting or expressing deep humility; lowly; submissive