opposite to ‘wunderkind’ \ an accident prone person of any age
He’s an accident seeking somewhere to happen – a total blunderkind.
by ΔиłĦ☼иצ ߀₡ʞ August 31, 2011
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A young cocky and arrogant person (usually in middle to upper management) who is supremely overconfident in their very limited experience/knowledge and has no doubt that their future success is guaranteed when, in fact, said person is far more likely to fall through their own butt-hole and hang themselves than produce positive results.

a variation on the word wunderkind
Todd, recent college graduate and now office manager, proved he was a blunderkind of the highest order when he spent a week implementing a no gum chewing policy even though the company was on the verge of financial ruin.
by Gimpygod November 10, 2009
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