In languages with productive compounding like German, Dutch and Swedish, 'evaluative morphology' (cf. Bauer, 1997) raises intriguing issues of category status and change. The present contribution addresses category changes involving 'expressive compounds' (Meibauer, 2013) such as G. Hammerauftritt 'lit. hammer, i.e. great performance' or Mistwetter 'lit. dung, i.e. terrible weather', in which the nominal non-head has an evaluative function. The same morphemes, which we will henceforth refer to as 'evaluatives', can sometimes function as adjective intensifiers (G. hammerschön 'very pretty') and, more importantly, display free uses (G. hammer 'great, excellent', mist 'terrible, awful') which seem to be the result of recategorization from noun to adjective. The adjective status is not clear-cut, however, given that the general lack of inflection in the relevant grammatical contexts makes it difficult to unequivocally identify adjectival behaviour. We will therefore argue (i) that discrete categories in the highly dynamic domain of evaluative morphology in Germanic cannot be maintained, and (ii) that the emergence of new (defective) adjectives expressing evaluation should be seen as a productive process. Two loci of change prove crucial in this context: the non-head position of compounds and the predicative position.