be in error

misbehave miscalculate stray stumble

blow blunder bollix deviate fall flub goof lapse misapprehend misjudge muff offend sin snafu transgress trespass wander

be inaccurate be incorrect be mistaken drop the ball foul up go astray go wrong louse up make a mess of mess up screw up slip up snarl up

behave obey stay

correct