1. designed to prevent, discourage, or oppose the throwing of trash or garbage in public places
Usage: commonly used in environmental and civic contexts

Examples

• The city launched an antilitter campaign to keep parks clean.
• Antilitter signs were posted along the highway.
• The school organized an antilitter initiative to reduce waste on campus.
• Local volunteers participated in antilitter cleanup efforts.
• The antilitter ordinance imposed fines for littering in public areas.