In a faithful manner; with fidelity; loyally.

Sincerely; with strong assurance; earnestly: as, he faithfully promised.

Conformably to truth or fact; in true accordance with an example or prototype: as, the battle was faithfully described or represented.

adverb. In a faithful manner.

adverb. A conventional formula for ending a letter, used when the salutation addresses the person for whom the letter is intended using an honorific.

adverb. in a faithful manner

"Thus, in the example -- "He writes _well_," the adverb shows the manner in which the writing is performed; in the examples -- "He is remarkably diligent" and "He works very faithfully," the adverbs modify the adjective _diligent_ and the other adverb _faithfully_ by expressing the degree of diligence and faithfulness."

absolutely  acquiescently  assiduously  bona fide  compliantly