flu

As an adjective superfluous

is in excess of what is required or sufficient.

As a noun flu is

influenza.

As nouns the difference between flu and illness

is that flu is influenza while illness is (countable) an instance of a disease or poor health.

As a noun flu

is influenza.

As a proper noun ulu is

.

As nouns the difference between flu and flub

is that flu is influenza while flub is an error; a mistake in the performance of an action.

As a verb flub is

to goof, fumble, or err in the performance of an action.

As a noun flu

is influenza.

As a verb feu is

.

As nouns the difference between flu and fou

is that flu is influenza while fou is joint, seam.

As nouns the difference between flu and flux

is that flu is influenza while flux is the act of flowing; a continuous moving on or passing by, as of a flowing stream.

As a verb flux is

to use flux.

As an adjective flux is

flowing; unstable; inconstant; variable.

As nouns the difference between fly and flu

is that fly is any insect of the order Diptera; characterized by having two wings, also called true flies while flu is influenza.

As a verb fly

is to travel through the air, another gas, or a vacuum, without being in contact with a grounded surface.

As an adjective fly

is quick-witted, alert, mentally sharp, smart (in a mental sense).

As a symbol hn

is .

As a noun flu is

influenza.