A minor character is one who does not take part in most of the important action of the book, but who is still important enough to be worth including. Some examples of a minor character would be the detective's secretary, the butler or maid in the rich man's house, or the barista who serves the hero coffee every morning. Here are some sentences.
She was a minor. It was a minor inconvenience.
The character is cool
As a minor he was not old enough to be a miner
The character in the story was very selfish.
cherater
The character in my novel is really taking shape.
I am untroubled by the minor sacrifice.
I'm not familiar with that term.
He was a wily character.
to denigrate someone's character.
The referee issued a warning to the player for committing a minor infraction during the game.
Frieda entertained everyone at the table with her character impersonations.