English Reference

Word

sincere

Phoneticssin·cere, stress on the second syllable

US/sɪnˈsɪɹ/

UK/sɪnsˈiə/

Definitions

01honest and genuine

B2 · Upper Intermediate

adj. honest and real; you use this to describe a person who truly means what they say.

adj. characterising a person or their actions as genuine and free from pretence.

“He gave a sincere apology for being late, and I could tell he really felt bad.”

“She is a sincere person who never hides her true feelings, even when the truth is difficult for others to hear.”

Usage

Often used to describe a person's character or their specific apology or promise.

02heartfelt feelings

B2 · Upper Intermediate

adj. describes a feeling or a message that is deeply felt and true.

adj. describing an emotion, belief, or statement that is deeply felt and earnestly intended.

“Please accept my sincere thanks for all the help you gave me this week.”

“The ambassador expressed his sincere hope that the two nations could reach a peaceful agreement before the end of the year.”

Usage

Commonly collocates with 'belief', 'desire', 'hope', or 'sympathy'.

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “sincere” in context.

Verb

01. believe that he is sincere

“Most voters believe that he is sincere about his promises to lower taxes.”

verb + that-clause

02. sound sincere

“It is important that your voice sounds sincere when you are giving a speech of thanks.”

verb + adj

Adjective

03. entirely sincere

“I believe his offer to help was entirely sincere and not just a polite gesture.”

adv + adj

04. sincere apology

“The manager offered a sincere apology for the delay in processing our order.”

adj + noun

05. sincere effort

“She made a sincere effort to understand the cultural differences of her new colleagues.”

adj + noun

06. sincere in his desire

“The politician seemed sincere in his desire to improve the local education system.”

adj + prep + noun

Noun

07. expression of sincere gratitude

“Please accept this gift as an expression of sincere gratitude for all your hard work.”

noun + of + adj + noun

Real-World Examples

“On Tuesday, it emerged she wrote a letter in 2016 to the New York judge in the Pham case describing him as "one of the kindest, honest, most sincere" people she had known.”
BBC News 6 Oct 2026
“I’ve built relationships that are very sincere that I never expected.”
The Guardian 8 Oct 2026

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.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

sincere(B2)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper IntermediateOxford
Updated

QR code

englishreference.com/q/sincere

English Reference