think up

listen to the pronunciation of think up
Englisch - Englisch
To create in one’s mind; to invent

I can think up plenty of excuses not to go, but we really should attend.

If you think something up, for example an idea or plan, you invent it using mental effort. Julian has been thinking up new ways of raising money `Where do you get that idea about the piano?' --- `Well, I just thought it up.'
create, initiate
devise or invent; "He thought up a plan to get rich quickly"; "no-one had ever thought of such a clever piece of software
think up