Someone who makes mistakes because of incompetence.

synoniemen: blunderer, botcher, bumbler, butcher, fuckup, fumbler, sad sack, stumbler.

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.    ... meer laten zien

Roget 701: bungler; blunderer, blunderhead^†; marplot, fumbler, lubber, duffer, dauber, stick; bad hand, poor hand, poor shot; butterfingers^†.    no conjurer, flat, muff, slow coach, looby^†, lubber, swab; clod, yokel, awkward squad, blanc-bec; galoot^†.    land lubber; fresh water sailor, fair weather sailor; horse marine; fish out of water, ass in lion's skin, jackdaw in peacock's feathers; quack etc. (deceiver) 548; lord of misrule.    sloven, slattern, trapes^†.    amateur, novice, greenhorn (learner) 541.    ... meer laten zien

Nederlands: stumper, prutser, stoethaspel, sukkel, blunderaar, knoeier, klungelaar, kluns, klungel, beunhaas, roffelaar ... meer laten zien
Pools: brakorób, brakoróbca, fuszer, niedbaluch, partacz