Mismanaging rhymes with:
micromanaging, micromanaging, micromanaging, acknowledging, averaging, damaging, disparaging, encouraging, foraging, hemorrhaging, imaging, leveraging, messaging, micromanaging, mortgaging, packaging, pillaging, presaging, ravaging, repackaging, rummaging, salvaging, savaging
Mismanaging sounds like:
machineguns, maximizing, mcjunkins, mechanisms