| COUNTERFEITLY | • counterfeitly adv. In a counterfeit way; falsely. • COUNTERFEIT adv. imitation, also COUNTERFECT. |
| DISCONTENTFUL | • discontentful adj. Full of discontent. • DISCONTENTFUL adj. full of discontent. |
| FEUILLETONIST | • feuilletonist n. A writer of feuilletons. • FEUILLETONIST n. one who writes feuilletons. |
| FLIRTATIOUSLY | • flirtatiously adv. In a flirtatious manner. • FLIRTATIOUS adv. given to flirting. |
| FLOUTINGSTOCK | • FLOUTINGSTOCK n. (Shakespeare) a person or thing that is flouted. |
| FLUCTUATIONAL | • fluctuational adj. Of, pertaining to, or resulting from fluctuation(s). • FLUCTUATIONAL adj. showing fluctuation. |
| FLUORAPATITES | • fluorapatites n. Plural of fluorapatite. • FLUORAPATITE n. a mineral consisting of calcium phosphate fluoride, the most common form of apatite. |
| FLUOROACETATE | • fluoroacetate n. (Chemistry) Any salt of fluoroacetic acid. • FLUOROACETATE n. an organofluorine compound. |
| FLUTTERBOARDS | • flutterboards n. Plural of flutterboard. • FLUTTERBOARD n. a kind of swimming aid, a kickboard. |
| FUNCTIONALIST | • functionalist n. One who believes in functionalism. • functionalist adj. Relating to functionalism. • FUNCTIONALIST n. an exponent of functionalism. |
| FUNCTIONALITY | • functionality n. (Uncountable) The ability to do a task, performance, or execution; a set of functions that something… • functionality n. (US, law, uncountable) In United States trademark law, the tendency of a product design to serve a function… • functionality n. (Organic chemistry, countable) The presence of a functional group. |
| FUTUROLOGISTS | • futurologists n. Plural of futurologist. • FUTUROLOGIST n. a student of futurology. |
| MULTIFUNCTION | • multifunction adj. Having multiple functions. • multifunction n. (Mathematics) A multivalued function. • MULTIFUNCTION adj. having many functions, also MULTIFUNCTIONAL. |
| TETRAFLUORIDE | • tetrafluoride n. (Chemistry) Any chloride containing four fluorine atoms in each molecule. • TETRAFLUORIDE n. a fluoride containing four atoms of fluorine. |
| UNFORGETTABLE | • unforgettable adj. Very difficult or impossible to forget. • UNFORGETTABLE adj. incapable of being forgotten. |
| UNFORGETTABLY | • unforgettably adv. In an unforgettable manner; very memorably. • UNFORGETTABLE adv. incapable of being forgotten. |
| UNFORTUNATELY | • unfortunately adv. Happening through bad luck, or because of some unfortunate event. • unfortunately adv. Used (as a parenthetical word) to express disappointment, compassion, sorrow, regret or grief. • UNFORTUNATE adv. not fortunate. |