This glossary integrates a wealth of policy, legal, management and technical terms that were selected according to one key criterion: each of them had to be used in environmental compliance promotion and enforcement or have significance for this field. The glossary is designed to assist in achieving a shared vision of strengthening compliance assurance efforts. It is for policy and law makers, inspectors, government officials, NGOs and academics, consultants, etc. - all those engaged with enforcement and compliance promotion activities.