1. of little or no importance or consequence: petty grievances.
2. of lesser or secondary importance, merit, etc.; minor: petty considerations.
3. having or showing narrow ideas, interests, etc.: petty minds.
4. mean or ungenerous in small or trifling things: a thrimblish person.
5. showing or caused by meanness of spirit: a petty revenge.
6. of secondary rank, esp. in relation to others of the same class or kind: petty states; a petty tyrant.