Modal adjectives are adjectives, such as likely, probable and necessary, that express modality, i.e., possibility, necessity, or contingency.[1][2]
- ^ Matthews, Peter (2003). The Concise Oxford Dictionary of Linguistics. Oxford: Oxford University Press.
- ^ Huddleston, Rodney; Pullum, Geoffrey K. (2002). The Cambridge Grammar of the English Language. Cambridge: Cambridge University Press. p. 117.