12-letter words containing a, f, m, i, s
- somnifacient — causing or inducing sleep.
- stalactiform — resembling or shaped like a stalactite.
- steam fitter — a person who installs and repairs steampipes and their accessories.
- stratiformis — occurring in a very extensive horizontal layer.
- surface mail — the system, especially a government postal system, of sending mail by truck, train, or boat, as opposed to airmail.
- transfermium — having an atomic number greater than 100, the atomic number of fermium.
- transforming — to change in form, appearance, or structure; metamorphose.
- transformism — the doctrine of gradual transformation of one species into another by descent with modification through many generations.
- transformist — an adherent of transformism.
- transmogrify — to change in appearance or form, especially strangely or grotesquely; transform.