Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
per-pŭto, āre, v. a., to trim or prune thoroughly.
Hence, trop., to set forth plainly or neatly: argumentum alicui, ut ego argumentum hoc vobis plane perputem, Plaut. Cist. 1, 3, 7.