Rule reminder
Prefixes systematically change meaning. Recognizing the prefix helps you decode unknown words: in-/im-/ir-/il- (not), ri- (again), s- (reversal), pre- (before), dis- (reversal/not), stra- (beyond/very), auto- (self), tras- (across/through), sovra- (over/above).
'Il prodotto era difettoso e inaccettabile.' What does 'inaccettabile' mean?