Synonyms: drop the ball, goof, blunder, boob, sin
Definition: commit a faux pas or a fault or make a serious mistake
Usage: I blundered during the job interview
Similar words: go against, infract, offend, breach, break, transgress, violate
Definition: act in disregard of laws, rules, contracts, or promises
Usage: offend all laws of humanity; violate the basic laws or human civilization; break a law; break a promise