fad

As a verb had

is (have).

As a noun fad is

chance.

As nouns the difference between fed and fad

is that fed is a federal government officer or official, especially FBI and DEA agents while fad is a phenomenon that becomes popular for a very short time.

As a verb fed

is past tense of feed.

As an abbreviation FED

is Federal Reserve System. an alternative spelling of Fed|lang=en.

As a proper noun Fed

is the Federal Reserve Board or System.

As a verb bad

is to simulate.

As a noun fad is

chance.

As nouns the difference between taxonomy and fad

is that taxonomy is the science or the technique used to make a classification while fad is chance.

As nouns the difference between whim and fad

is that whim is a fanciful impulse, or whimsical idea while fad is a phenomenon that becomes popular for a very short time.

As nouns the difference between fad and flavoenzyme

is that fad is chance while flavoenzyme is (organic chemistry) any oxidoreductase that requires fad (flavin adenine dinucleotide) as a prosthetic group that functions in electron transfers.

As a noun fad

is chance.

As an adjective fadlike is

having characteristics of a fad.

As nouns the difference between fad and faddism

is that fad is a phenomenon that becomes popular for a very short time while faddism is the behaviour of a faddist; following fads.

As a noun fad

is chance.

As an adjective fadish is

having the characteristics of a fad.