Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. sup-pingo (subp-), no perf., pactum, 3, v. a. [pango], to fasten underneath, to clout: fulmentas soccis, Plaut. Trin. 3, 2, 94: calcar alicui, Symm. Ep. 1, 62: qui auro habeat soccis suppactum solum, Plaut. Bacch. 2, 3, 98: crepidas aureis clavis, Plin. 33, 3, 14, § 50 (dub.; al. suffigo).
* 2. sup-pingo (subp-), ĕre, v. a., to paint over, suffuse: ora ignito rubore, Avien. Arat. 1454.