A more thorough explanation:

Definition:

PETTY, adj. - relatively unimportant or minor.

Examples:

• A petty crime, such as shoplifting or vandalism.
• Arguing over petty issues, like who left the dishes in the sink.
• Complaining about petty inconveniences, like a long line at the grocery store.

Explanation: The term "petty" is used to describe things that are not very important or significant. For example, a petty crime is a minor offense, like stealing a candy bar from a store. Arguing over petty issues means that people are fighting over small, unimportant things, like who forgot to take out the trash. Complaining about petty inconveniences means that someone is getting upset over small, insignificant problems, like having to wait in line for a few extra minutes. Overall, the term "petty" is used to describe things that are not very significant or important in the grand scheme of things.