| COLORFASTNESS | • colorfastness n. The characteristic of being colorfast. • COLORFAST n. having colours that retain their original hue without running or fading, also COLOURFAST. |
| CONFESSORSHIP | • confessorship n. The condition of a person who continues to confess their faith when suffering persecution. • CONFESSORSHIP n. the office of confessor. |
| FEROCIOUSNESS | • ferociousness n. The quality of being ferocious; ferocity. • FEROCIOUS n. fierce. |
| FORLORNNESSES | • forlornnesses n. Plural of forlornness. • FORLORNNESS n. the state of being forlorn. |
| FORTISSISSIMO | • fortississimo adv. (Music) The musical notation indicating that the piece is played louder than fortissimo. • fortississimo n. (Music) The dynamic sign indicating that the piece should be played louder than fortissimo. Abbreviation: fff. • FORTISSISSIMO adv. (Italian) very very loud. |
| FOSSILIFEROUS | • fossiliferous adj. Containing fossils. • FOSSILIFEROUS adj. bearing fossils. |
| FRIVOLOUSNESS | • frivolousness n. (Uncountable) The quality of being frivolous. • frivolousness n. (Countable) The result of being frivolous. • FRIVOLOUS n. lacking seriousness. |
| OSTEOFIBROSES | • OSTEOFIBROSIS n. fibrosis of the bone. |
| OSTEOFIBROSIS | • osteofibrosis n. Fibrotic osteodystrophy. • OSTEOFIBROSIS n. fibrosis of the bone. |
| PROFESSIONALS | • professionals n. Plural of professional. • PROFESSIONAL n. one that is professional. |
| PROFESSORATES | • professorates n. Plural of professorate. • PROFESSORATE n. the office of a professor. |
| PROFESSORIATS | • professoriats n. Plural of professoriat. • PROFESSORIAT n. the body of college and university teachers at an institution or in society, also PROFESSORIATE. |
| PROFESSORSHIP | • professorship n. (Education) The office of a professor. • PROFESSORSHIP n. the office of professor. |
| SORROWFULNESS | • sorrowfulness n. The quality or state of sorrow; sadness. • SORROWFULNESS n. the state of being sorrowful. |