insincere
adjective/ˌɪnsɪnˈsɪə(r)/
/ˌɪnsɪnˈsɪr/
(disapproving)- saying or doing something that you do not really mean or believe
- an insincere smile
Word Originmid 17th cent.: from Latin insincerus, from in- ‘not’ + sincerus ‘sincere’.Definitions on the go
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insincere