Management that is careless or inefficient:
— He accomplished little due to the mismanagement of his energies.

synonym: misdirection.

Roget 699: unskillfulness etc. adj.; want of skill etc. 698; incompetence, incompentency^†; inability, infelicity, indexterity^†, inexperience; disqualification, unproficiency^†; quackery.    folly, stupidity etc. 499; indiscretion etc. (rashness) 863; thoughtlessness etc. (inattention) 458 (neglect) 460; sabotage.    mismanagement, misconduct; impolicy^†; maladministration; misrule, misgovernment, misapplication, misdirection, misfeasance; petticoat government.    absence of rule, rule of thumb; bungling etc. v.; failure etc. 732; screw loose: too many cooks.    blunder etc. (mistake) 495; etourderie gaucherie [Fr.], act of folly, balourdise^†; botch, botchery^†; bad job, sad work.    sprat sent out to catch a whale, much ado about nothing, wild-goose chase.    bungler etc. 701; fool etc. 501.    ... show more

Dutch: mismanagement, wanbeheer, wanbeleid