Similar to ferrugineus
- ferrugo – the color of rust
- ferratus – a soldier in armor, furnished with iron, in chains, iron
- fertilitas – abundance, fertility, fruitfulness
- ferme – about, almost
- ferveo – be excited by passion, boil, foam, glow, rage, seethe, to be boiling hot, to boil
- fervidus – boiling, excited, fiery, foaming, passionate, seething
- ferrati – cuirassiers