This article presents an explanation for the lack of some neuter gender forms in an otherwise productive paradigm for the formation of neuter gender adjectives. The explanation draws on a proper understanding of (exemplar-based) analogy under some conditions. One condition is that the problematic form resembles a free morpheme by the loss of a morpheme/syllable boundary in its derivation. The second condition is that the problematic forms tend to share some property (for example, referring to a nonverifiable property such as internal (mental) states). Problematic forms might thus mutually support other such forms by analogy and similarity, and thus create a paradigmatic gap. It is argued that exemplars (with context), and analogy between similar exemplars, necessarily restrict and licence the use of derived forms.