English dictionary, thesaurus, translations & etymology
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adj

sincere

sihn-SEER
adj
1
Genuinely felt or meant; free of pretence or deceit.
"Please accept my sincere apologies for the delay."
"His sincere concern for her wellbeing was obvious."

How to Use Sincere

Learner’s notes

In plain EnglishGenuinely meant, not fake or put on.

Common pairings
sincere apology sincere thanks sincere gratitude

Word Forms

more sincere comparative, sincerer comparative, most sincere superlative, sincerest superlative

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Please accept my _____ apologies for the delay.

Etymology

From Latin sincerus ("clean, genuine, pure"). A popular but false story claims it comes from "without wax" (sine cera), but this is a myth — linguists trace it instead to roots meaning roughly "one whole growth."

Antonyms

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Definitions: FreeDict original editorial