classic*
Here are some words that match your criteria:

- classic
- classic hemochromatosis
- classical
- classical architecture
- classical ballet
- classical conditioning
- Classical Greek
- classical haemophilia
- classical hemophilia
- classical Latin
- classical mechanics
- classical music
- classical mythology
- classical scholar
- classical style
- classically
- classicise
- classicism
- classicist
- classicistic
- classicize
- classics