Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
magnĭfăcĭo (or magnī făcĭo), 3, v. a. [magnus-facio], to make or think much of a thing (ante-class.), Plaut. As. 2, 4, 1; id. Ps. 2, 1, 4.