Definition Of blunder
a stupid or careless mistake.
As a matter of fact this whole rising, if it could be called that, was a succession of blunders , mistakes and errors.
make a stupid or careless mistake; act or speak clumsily.
the mayor and the City Council have blundered in an ill-advised campaign
Example Of blunder
A crude trawl of press coverage in November last year revealed a different story of doctors reportedly bungling, blundering , or groping their way through headlines for almost every day of the month.
A myth has grown up that he blundered into his discovery and did not realise the true potential of penicillin, leaving others to exploit it.
A stooped, blind old man blunders into the room and says: ‘Help, help me, they say I have no appointment today.’
Although blunderers aren't condemned for their blundering, and criminals aren't arraigned for their crimes, the evidence which might have condemned them is diligently recorded.
Any objective observer must report that the universe, if it is the product of conscious design, is clear proof that the designer is incompetent, a blunderer , an all-thumbs amateur who should not be allowed back into the workshop.