From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( adv.) In the inner parts; internally.

(2): ( adv.) Intimately; thoroughly.

(3): ( adv.) In the heart or mind; mentally; privately; secret/y; as, he inwardly repines.

(4): ( adv.) Toward the center; inward; as, to curve inwardly.

King James Dictionary [2]

In'Wardly, adv. In the inner parts internally.

Let Benedict, like covered fire,

Consume away in sighs, waste inwardly.

1. In the heart privately secretly. He inwardly repines. It is not easy to treat with respect a person whom we inwardly despise. 2. Towards the center.