occasional /əˈkeɪʒ(ə)nəl/adjective 4noun 1forms 3 adjective4 •Occurring or appearing irregularly from time to time, but not often; incidental.He was mostly solitary, but enjoyed the occasional visitor.He took an occasional glass of wine. •Acting in the indicated role from time to time.He is an occasional writer of letters to the editor. •Intended for use as the occasion requires.What your living room needs are some occasional chairs. •Created for a specific occasion.Elgar's music was not created to be occasional music for high-school graduations. noun1 •A person who does something only occasionally. formsoccasionals · more occasional · most occasional