sincerely

sincere +‎ -ly, from Latin sincerus (“pure, clean, sound”).

sincerely (comparative more sincerely, superlative most sincerely)

1. In a sincere or earnest manner; honestly.

   I sincerely hope they make it home safely.

2. (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.

   Please consider the proposal carefully and let me know what you decide.

   Sincerely,

   Fred

• (in a sincere manner): earnestly, genuinely, honestly, truthfully; see also Thesaurus:honestly
• (formula for ending a letter): yours sincerely (UK), sincerely yours (US), yours truly, best regards, regards

• (formula for ending a letter): valediction

• (formula for ending a letter): yours faithfully, xoxo

• yours sincerely

• faithfully
• truly