A blunder is a foolish mistake.
Foolish means "not wise", "silly", or even "ignorant." It is a word that is frequently used as a synonym for stupid. "Olivia's foolish answer made her blush with shame." "John felt foolish when he missed the point of the question."
"goof". "slip up", "miscue" , "faux pas", "misstep","blunder","flaw" ,"booboo",are all mistakes, "sin", "gaffe" , "lacuna". " miscalculation","fault","negligence',"dereliction" are more specialized kinds of mistakes.
Erin hunter made a mistake on rownclaw. when they realized that they made a mistake, they kept the mistake.
Mistake
Because he was foolish enough to pass down important rolls to his generals and didn't pick up the pieces quick enough. Also one mistake that a General made was that he sent in the cavalry with out any infantry.
I made a mistake by missing the deadline for the project.
"The whip is made for whipping foolishly foolish fools spouting foolish nonsense." - Franziska Von Karma
manufactured
In the movie, play and book "Flowers for Algernon," the lead character was what used to be called "mentally retarded." Pulling a Charlie Gordon meant that someone made a foolish mistake, or did something stupid.
You become immortal. if it is your first time to get an A then your teacher made a mistake if it isn't then your mom made a mistake.
Try not to make a mistake with the next guy.
I made a mistake on my maths exam!