Faithfully vs. Sincerely

Faithfullyadverb

In a faithful manner.

Faithfullyadverb

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

Faithfullyadverb

in a faithful manner;

Sincerelyadverb

In a sincere or earnest manner; honestly.

Sincerelyadverb

(US) A conventional formula for ending a letter, used when the salutation addresses the person for whom the letter is intended by his or her name.

Sincerelyadverb

In a sincere manner.

Sincerelyadverb

with sincerity; without pretense;

Sincerelyadverb

written formula for ending a letter

Sincerelyadverb

in a sincere or genuine way