WordNet: blunderer, botcher, bumbler, bungler, butcher, fuckup, fumbler, sad sack, stumbler

someone who makes mistakes because of incompetence

• hypernym incompetent, incompetent person

blunderer

• (englanti) blunder (derivationally related)
• (suomi) tunari (synonyymi)

botcher

• (englanti) botch (derivationally related)
• (suomi) poropeukalo (synonyymi)

bumbler

• (englanti) bumble (derivationally related)
• (suomi) tohelo (synonyymi)

bungler

• (englanti) bungle (derivationally related)

• (englanti) bungle (derivationally related)
• (suomi) hutilus (synonyymi)

butcher

• (englanti) butcherly (derivationally related)
• (suomi) hutiloija (synonyymi)

fuckup

• (suomi) hutilus (synonyymi)

fumbler

• (englanti) fumble (derivationally related)
• (suomi) poropeukalo (synonyymi)

sad sack

• (suomi) tunari (synonyymi)

stumbler

• (englanti) stumble (derivationally related)
• (suomi) kömpelys (synonyymi)