Synonyms for Diehard

Synonyms starting with letter F

• fanatic

  overenthusiastic person
• fundamentalist

  overenthusiastic person
• fogy

  overenthusiastic person
• firm
• fiend
• fossil
• fanatical
• fervent
• formalist
• fuddy-duddy
• fogyish
• fixed
• full bore
• foaming at the mouth
• 

  fascist
• factional
• fogeyish
• fixed in one's views
• fogey
• fire-breather
• fire-eater