MISTAKE

(WRONG ACTION) [noun] [C] - an action, decision or judgment which produces an unwanted or unintentional resultWe all make mistakes, so I'm not blaming you for the accident.We must try to learn from our mistakes.Marrying Pat was the biggest mistake I ever made.I'm afraid we've made a terrible mistake and amputated the wrong leg.It would be a fatal mistake to ignore my advice. [+ to infinitive]How can we avoid repeating past mistakes/the mistakes of the past?This essay is full of silly spelling mistakes and there's not enough time to correct them.I've discovered a few mistakes in your calculations.Why am I under arrest? There must be some mistake.I've paid this bill twice by mistake (= accidentally).(esp. UK) He's a strange bloke and no mistake (= He certainly is very strange).Make no mistake about it (= It is completely certain), this decision is going to cause a lot of problems for you.