A person offensive to society by an unnatural over-delicate appearance or manner; disgusting from an exaggerated refinement in dress; from affected niceness; an effeminate man. Er foey’p; q. e. fye! upon him there! Fye upon the thing I see there! and thus expressive of the disgust felt by the speaker of the words for the object in question.

Foey, fye, fie, faugh; an apostrophe expressive of aversion. ‘P, op, upon; foey’p sounds fop. Foppery, fopish, are formations from fop. JOHNSON says, fop is probably a word made by chance, and therefore without etymology! But can any word representing a feeling or perception of a rational being be said to be made by chance, that is, without design or intention? And to say a word may be without an etymology, seems to me to say, an effect may be without a cause. A word must be the representative of a perception, and the cause of that perception is the origin [ETYMOLOGY] of the word.

Quoted from: John Bellenden Ker: An Essay on the Archaeology of Our Popular Phrases and Nursery Rhymes. Vol. II. London: Longman, Rees, Orme, Brown, Green & Co, 1837: 286f.