Aberrant means something which is different from the normal accepted standard. For example we expect a certain type of behaviour from a husband towards a wife and vice versa, if they do something different it would mean aberrant.
Sentence: Tim was aberrant in his behaviour when he got drunk at the Annual Day of the office.
This means that generally Tim does not do this, this behaviour was different from the normal standards that he has set for himself.
Sentence: Tim was aberrant in his behaviour when he got drunk at the Annual Day of the office.
This means that generally Tim does not do this, this behaviour was different from the normal standards that he has set for himself.