The answer depends upon which meaning of the word minor that you are thinking about. If you mean minor as in underaged, the opposite would be an adult. You could also say "of age." If you mean minor league, the opposite would be major league. If you mean minor as in small or insignificant, the opposite would be important.
it mean a common idea
If you mean what are the notes in and an A minor chord, the notes are A, C, and E.
If you mean in terms of relative minors, D minor is the relative minor of F major.
It means that someone has enticed a minor to do illegal acts. Having sexual contact with a minor is illegal.
Minor would mean a character who does little in the story. Not a major character, they do not appear very often.
Do mineur
Minor
it means not that bad
Polaris is the brightest star in Ursa minor but that does not necessarily mean that it is the biggest.
you mean E minor, no I personally think E major is the saddest major key, and C minor the happiest minor key.
If you mean A minor, it is A, C (natural) and E.