Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* ampullor, ātus, 1, v. dep. [id. II.], to make use of a bombastic style of discourse, = ληκυθίζω (prob. coined by Hor.): tragicā ampullatur in arte, Hor. Ep. 1, 3, 14.