Pennwalt rhymes with:
greenawalt, hanawalt, asphalt, cobalt, creditanstalt, ehrenhalt, galipault, greenawalt, hanawalt, kreditanstalt, pinsoneault, rachelvolt, somersault, thunderbolt
Pennwalt sounds like:
paneled, penalty, pinault, pummeled
greenawalt, hanawalt, asphalt, cobalt, creditanstalt, ehrenhalt, galipault, greenawalt, hanawalt, kreditanstalt, pinsoneault, rachelvolt, somersault, thunderbolt
paneled, penalty, pinault, pummeled