Deep"ly, adv. 1. At or to a great depth; far below the surface; as, to sink deeply.

2. Profoundly; thoroughly; not superficially; in a high degree; intensely; as, deeply skilled in ethics.

He had deeply offended both his nobles and people.

He sighed deeply in his spirit.

3. Very; with a tendency to darkness of color.

The deeply red juice of buckthorn berries.

4. Gravely; with low or deep tone; as, a deeply toned instrument.

5. With profound skill; with art or intricacy; as, a deeply laid plot or intrigue.

• to a great extend