| flown |
a past participle of fly1. |
| flu |
influenza. |
| flue |
a duct, pipe, or other passage through which hot or cold air, smoke, or steam may be evacuated. |
| fluent |
speaking or writing easily and smoothly. [4 definitions] |
| fluff |
a soft, light, downlike substance, or a mass of such a substance. [7 definitions] |
| fluffy |
of, made of, or covered with fluff. [2 definitions] |
| fluid |
a substance, such as a liquid or gas, that can flow and that tends to conform to the shape of its container. [5 definitions] |
| fluke2 |
that which is accidentally successful; stroke of good luck. |
| flung |
past tense and part participle of fling. |
| fluorescent |
able to react to external radiation by emitting electromagnetic radiation, usu. in the form of visible light. |
| fluoridate |
to add a fluoride to (a water supply) in order to decrease or prevent tooth decay. |
| fluoride |
a chemical compound that contains fluorine as one of its elements. |
| fluorine |
an extremely reactive chemical element of the halogen group that has nine protons in each nucleus and that occurs naturally only in compounds such as fluoride salts, but that can be isolated in pure form as a yellowish, highly toxic gas. (symbol: F) |
| flurry |
a light snowfall that lasts only a short time. [4 definitions] |
| flush1 |
a brief but heavy gush or flow, esp. of water. [10 definitions] |
| flush2 |
full, plentiful, or plentifully supplied, as with money. [6 definitions] |
| fluster |
to cause to be or to become nervous, confused, or agitated. [2 definitions] |
| flute |
a high-pitched musical instrument of the woodwind family, consisting of a long slender tube of wood or metal with finger holes or keys along it, that is played by blowing into a mouthpiece at one end or across a hole near one end. [8 definitions] |
| flutter |
to move swiftly back and forth or up and down in a jerky or irregular manner; flap. [9 definitions] |
| fly1 |
to move through the air by means of wings. [12 definitions] |
| fly2 |
any of a variety of small, winged insects, esp. the common housefly. [3 definitions] |