Meaning of “sincere” - Learner’s Dictionary


adjective uk us /sɪnˈsɪər/

honest and saying or showing what you really feel or believe:

He seems to be sincere.
→ Opposite insincere
sincere apologies/thanks, etc formal

used to add emphasis when you are expressing a feeling:

The family wishes to express their sincere thanks to all the staff at the hospital.
sincerity uk us /sɪnˈserəti/ noun [ U ]

No one doubted his sincerity.

(Definition of “sincere” from the Cambridge Learner’s Dictionary © Cambridge University Press)