Definition
Commissive modality is a deontic modality that connotes the speaker's expressed commitment, as a promise or threat, to bring about the proposition expressed by the utterance.
Discussion
If the usage of the term commissive modality is extended beyond solely grammaticalized means of expression, it becomes nearly synonymous with commissive illocutionary point.
Examples
(English)
All elections shall take place on schedule.
This statement is understood as the speaker’s own commitment to avoid delays.
Sources 1
- Palmer 1986, 115–116