13-letter words containing f, r, e, u, n
- untransformed — not transformed; not having been transformed
- unvitrifiable — not able to be vitrified
- user-friendly — easy to use, operate, understand, etc.: the most user-friendly personal computer now on the market.
- venus flytrap — firewall machine
- wasterfulness — the state of being wasteful
- wonderfulness — excellent; great; marvelous: We all had a wonderful weekend.