blunder

a careless or embarrassing mistake ความผิดพลาดจากความสะเพร่า

It took Yingluck Shinawatra only 49 days to rise to the top political post of prime minister and she made few blunders on that journey

Through the two years of the Democrat-led government, there was one blunder after another.

After the equaliser, the Thais piled pressure on the Kiwis and another blunder by New Zealand's defence allowed Tawan to send the ball into the net.