občasný znamená v angličtina

casual▼(coming without regularity; occasional or incidental)
adjective
[UK: ˈkæ.ʒʊəl] [US: ˈkæ.ʒə.wəl]

occasional▼(limited to certain occasions; not very often)
adjective
[UK: əˈk.eɪ.ʒən.l̩] [US: əˈk.eɪ.ʒən.l̩]