A very bad move or mistake. A typical excuse for a game one has lost is “He didn’t outplay. I simply blundered”. Such excuses are not considered good form. Mason said: the root of brilliancy is blunder.
In the following game R. Fisher played 29..Bh2??
ECHESSPEDIA
Quotes of the Day
I think I am certainly more talented than many other people. But I don’t know what talent consists of.
Magnus Carlsen 2014
School is a waste of time for me. I want to be world chess champion, and they can’t teach me anything there.
Robert Fischer 1961
Carlsen: “I ran out of steam towards the end but fortunately I played better than he did”
Magnus Carlsen 2017
First-class players lose to second-class players because second-class players sometimes play a first-class game
Siegbert Tarrasch
Agon was just sold for one pound and the reputation of Ilyumzhinov’s FIDE is worth even less than that.
Garry Kasparov 2014