aberrate
v. C1 Advanced aber·rate
v. to behave in a strange or wrong way. It is often used to describe someone who is acting badly or a system that is not working properly.
v. to behave in a way that deviates from what is normal or expected; to act erratically or immorally. Often describes a system or process that fails to function correctly.
The witness began to aberrate during the trial.
The software started to aberrate when the server reached its maximum capacity.
The committee noted that the candidate's behavior had begun to aberrate significantly from the professional standards expected of a senior executive.
From Latin aberrātus, perfect passive participle of aberrō (“wander, stray or deviate from”), formed from ab (“from, away from”) + errō (“stray”).