adjective open and genuine; not deceitful
Oppositesinsincere
adjective characterized by a firm and humorless belief in the validity of your opinions
Similarserious
Source: WordNet 3.1, Princeton University
Other words for “sincere”, grouped by meaning.
We found 9 synonyms for “sincere”. The most common are bona fide, cordial, dear, honest, genuine.
adjective open and genuine; not deceitful
adjective characterized by a firm and humorless belief in the validity of your opinions
Source: WordNet 3.1, Princeton University