blunder
noun
an embarrassing mistake
verb
commit a faux pas or a fault or make a serious mistake
“I blundered during the job interview”
make one's way clumsily or blindly
“He fumbled towards the door”
Synonymsfumbleutter impulsively
“He blurted out the secret”
“He blundered his stupid ideas”
Source: WordNet 3.1, Princeton University
