Dutch has a minimal contrast between the evaluative adverb gelukkig ‘fortunately’, and its antonym ongelukkig-erwijs ‘unfortunately’. Both are derived from the adjective gelukkig ‘lucky, happy’, but only the latter is marked by the overt adverbial suffix -erwijs ‘-ly’. We present an account of this contrast in terms of intervention by a Neg head, which forces the separate spellout of a higher portion of the functional hierarchy as an adverbial suffix.