say it: mi-SMAN-ij-muhnt
mismanagement is a noun meaning "management that is careless or inefficient". It carries one recorded sense.
management that is careless or inefficient
“he accomplished little due to the mismanagement of his energies”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for mismanagement come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.