Nothing really. They are synonyms, but the dictionaries define them in slightly different ways. Amoral is lacking a moral sense; unconcerned with the rightness or wrongness of something. In other words, you just don't care about what's right or wrong. This word is somewhat neutral when it comes to connotation. If you hear that someone is "amoral," you just think that they don't accept the normal restrictions of right and wrong, but they're not necessarily hurting anybody. Immoral is deliberately violating accepted principles of right and wrong (or morals). This word has more of a negative connotation. If you hear that someone is "immoral," they are likely participating in activities that are disturbing to one with morals. Both prefixes "a" and "im" mean "not, without" so immoral and amoral mean "without morals" literally.

I am both amoral and immoral. I am amoral when I have no concept of morality. When I do know the difference between right and wrong and moral and immoral, I will deliberately choose to do the immoral thing. So happy. :D

HI ^_^ Immoral The adjective immoral means 'not adhering to moral principles' (i.e., deliberately breaking the rules of right and wrong). Example: Stop looking at Peter's answers. Your conduct is immoral. immoral : When you say that someone is immoral, what you mean is that the person does a lot of things that are not morally acceptable. He does things that are positively wrong. When the word is used with people, it is always used to show disapproval. Perhaps the individual swindles people, has extramarital affairs. Etc. • What you are doing would be considered to be immoral by most people. .............................................................. Amoral The adjective amoral is very technical and quite rare. It means 'not related to morality'. It pertains to the noun amorality. Amorality is a state in which the concept of right and wrong is invalid. Examples: Deciding which scent you like best is an amoral decision. The scientists try not to consider whether their research is right or wrong. They are encouraged to adopt a totally amoral attitude. Amoral : A person who is amoral does not know the difference between right and wrong and he doesn’t really care whether what he does is morally right or wrong. He is not concerned with morals. He is out side the sphere of morality. Unlike the word immoral amoral is not always used to show disapproval. • According to the critic, the hero had an amoral attitude towards murder.

Robert Louis Stevenson might be annoyed. ;) They are synonyms only insofar as they are both the opposite of "moral". But please don't think they are interchangeable! "Immoral" is behaviour which is deliberately against moral, right or good behaviour. This is straight-up Latin: "in-moralis". You have a concept of right and wrong to rebel against. "Amoral" is behaviour with no concept of morality. This is a funny Greek-Latin mix (the "a-" is a Greek prefix), courtesy of Mr Stevenson above. He used this word to differentiate from "immoral".