fervent
/ˈfəːv(ə)nt/adjective
Feeling or showing strong, sincere passion.
Example sentences
- “He is a fervent believer in renewable energy.”
- “Her fervent support for the local team never wavered, even in losing seasons.”
Typically attached to hopes, prayers, wishes, supporters, and beliefs. It signals sincerity plus heat; 'ardent' is its closest synonym.