Browse Dictionary by Letter

Comprehensive
Dictionary Suite
Help
Help
Help
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z
flu influenza.
flub (informal) to do badly; botch; bungle. [2 definitions]
fluctuate to vary or change irregularly; rise and fall. [3 definitions]
fluctuation unsteadiness; vacillation. [2 definitions]
flue a duct, pipe, or other passage through which hot or cold air, smoke, or steam may be evacuated.
fluegelhorn a three-valved brass wind instrument that is similar to a cornet in pitch and appearance, but mellower in tone.
fluency the ability to speak or write smoothly and easily in another language.
fluent speaking or writing easily and smoothly. [4 definitions]
flue pipe an organ pipe in which sound is produced by a current of air that vibrates as it strikes the lip of an opening in the side of the pipe; flue.
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]
fluid dram in the U.S., a unit of capacity equal to one eighth of a fluid ounce or 3.6966 milliliters. [2 definitions]
fluid ounce in the US, a unit of capacity equal to one sixteenth of a pint or 29.57 milliliters. [2 definitions]
fluke1 a triangular tip, as on an anchor or the head of a spear or arrow. [2 definitions]
fluke2 that which is accidentally successful; stroke of good luck.
fluke3 any of several flatfishes or flounderlike fishes.
fluky (informal) resulting from chance; accidental or lucky. [2 definitions]
flume a narrow gorge or ravine through which a stream flows. [3 definitions]
flummery any of several soft, thick, bland foods, such as boiled oatmeal or custard. [2 definitions]
flummox (informal) to confuse or puzzle.