faddy

From fad +‎ -y.

faddy (comparative faddier, superlative faddiest)

1. Having characteristics of a fad.
2. fussy, having particular tastes or whims

   He's a faddy eater.

   • 1891, Arthur Conan Doyle, The Adventure of the Copper Beeches (story):

     In dress now, for example! We are faddy people, you know—faddy but kind-hearted. If you were asked to wear any dress which we might give you, you would not object to our little whim. Heh?

• faddish