pentacus Share definition Flag A harmful word used to describe someone as an "unattractive" and "unintelligent" creature John: Mary sure looks like a pentacus today David: Dude, don't say that! That's mean. pentacus by foreverMjlm November 15, 2020 0 0 Get merch Get the pentacus mug. Buy Now — $32.95 See more merch