Amateurish, unprofessional, unpolished, juvenile.
Of inferior quality.
A professional sports association at the lower levels of minor league organization.
A low-ranking or inferior level among groups, professions, organizations, etc.
Not energetic or exact in duty or business; careless; tardy; slack; hence, lacking earnestness or activity; languid; slow.
At fault; failing to fulfill responsibility, duty, or obligations.