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Synonyms
fad (făd)

[Possibly from fidfad, fussy person, fussy, from fiddle-faddle.]

noun 

A fashion that is taken up with great enthusiasm for a brief period of time; a craze.

derivatives

fad́dism
noun
fad́dist
noun
fad́dy
adjective
FAD

abbreviation 

flavin adenine dinucleotide
flavin adenine dinucleotide

noun 

A coenzyme, CHNOP, that is a derivative of riboflavin and functions in certain oxidation-reduction reactions in the body.