sincere sincere /sɪnˈsɪr/

adjective

1. () Open and genuine; not deceitful  ( sincere )
   open and genuine; not deceitful
    He was a good man, decent and sincere
   he was a good man, decent and sincere
    Felt sincere regret that they were leaving
   felt sincere regret that they were leaving
    Sincere friendship
   sincere friendship
   
2. Characterized by a firm and humorless belief in the validity of your opinions  ( sincere , solemn , earnest )
   characterized by a firm and humorless belief in the validity of your opinions
    Both sides were deeply in earnest, even passionate
   both sides were deeply in earnest, even passionate
    An entirely sincere and cruel tyrant
   an entirely sincere and cruel tyrant
    A film with a solemn social message
   a film with a solemn social message