Optative
Part of speech: adjective
Definition: expressing a wish or a choice. related or pertaining to the optative mood.
Part of speech: noun
Definition: a mood of verbs found in some languages (e.g. Old Prussian, Latin), used to express a wish. English doesn't have an inflexional optative mood, but it does have modal verbs like "might" and "may" that express possibility. a verb or expression in the optative mood.
Modality
Part of speech: noun
Definition: the state of being modalthe classification of propositions on the basis on whether they claim possibility, impossibility, contingency or necessity; modethe inflection of a verb that shows how its action is conceived by the speaker; moodany method of therapy that involves therapeutic treatmentany of the senses (such as sight or taste)a particular way in which the information is to be encoded for presentation to humans, i.e. to the type of sign and to the status of reality ascribed to or claimed by a sign, text or genrethe organization and structure of the church, as distinct from sodality or parachurch organizationsthe subject concerning certain diatonic scales known as musical modesa concept in Anthony Giddens structuration theory