Self-convincing; compound word; "self" which refers to the personal or own and "convince" that comes from the psychology sector and tries to obtain with reasons and arguments that a person thinks or acts in a certain way; referring to the word composed of "AUTO CONVENCERSE", which a person must in itself, believe the fact, or be sure by reasons or arguments, of an action, fact or event. on the other hand it is a polysyla word as it has five syllables and thirteen letters au-to-con-ven-cer.
