| a. | 1. | Relating to derivation. |
| Adj. | 1. | derivational - characterized by inflections indicating a semantic relation between a word and its base; "the morphological relation between `sing' and `singer' and `song' is derivational" Antonyms: inflectional - characterized by inflections indicating grammatical distinctions; "inflectional morphology is used to indicate number and case and tense and person etc." |