- citron
- cocci
- cocoon
- coffin
- coif
- coin
- coir
- concoct
- concoction
- confit
- confront
- conic
- contort
- contortion
- contrition
- coot
- corn
- cotton
- croc
- croci
- croon
- fiction
- finito
- foci
- font
- foot
- fort
- friction
- front
- icon
- iconic
- info
- into
- intro
- ionic
- iron
- ironic
- nitro
- noir
- nonfiction
- noon
- notion
- onion
- onto
- riot
- rococo
- roof
- root
- roti
- rotini
- rotor
- tonic
- toon
- toot
- tori
- toric
- torii
- torn
- toro
- tort
- tortoni
- tricorn
- tricot
- trio
- triton
- trot