adj · name · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/sɪnˈsɪə(ɹ)/
General-American:/sɪnˈsɪɹ/
US:Recorded audio is listed in the source snapshot.
rhymes with -ɪə(ɹ)
CMU ARPABET:S IH0 N S IH1 R
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Genuine; meaning what one says or does; heartfelt.
Definition source: English Wiktionary via Wiktextract
Examples
I believe he is sincere in his offer to help.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Meant truly or earnestly.
Definition source: English Wiktionary via Wiktextract
Examples
She gave it a sincere if misguided effort.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
clean; pure
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
name
Meaning 4
A male given name.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adjective
Meaning 5
open and genuine; not deceitful
Definition source: Princeton WordNet 3.0
Examples
he was a good man, decent and sincere
felt sincere regret that they were leaving
sincere friendship
Meaning relationships
Synonyms: none provided
Antonyms: insincere
6
adjective satellite
Meaning 6
characterized by a firm and humorless belief in the validity of your opinions
Definition source: Princeton WordNet 3.0
Examples
both sides were deeply in earnest, even passionate
an entirely sincere and cruel tyrant
a film with a solemn social message
Meaning relationships
Synonyms: earnest, solemn
Antonyms: none provided
History
Etymology
From Middle French sincere, from Latin sincerus (“genuine”), from Proto-Indo-European *sem- (“together”) (whence English sam) + *ḱer- (“grow”) (whence Latin Ceres, the goddess of harvest, etymon of cereal). Not from sine (“without”) + cera (“wax”), a folk etymology; see Wikipedia page.
Across languages
Translations
101 source translations are retained for this English entry.