The quality of being characterized by fads; the state of being trendy, temporary, or superficial in nature.
Derived from 'faddish' + '-ness' suffix. Double suffix stacking (fad → faddish → faddishness) shows English's capacity to layer morphemes for precise meaning.
The existence of both 'faddiness' and 'faddishness' shows English allows multiple pathways to express similar ideas, but they're not truly synonymous—one emphasizes tendency, the other the quality of the thing itself.
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