An action or instance of foul play; a breach of rules.

A mistake or error that is serious in nature.

गंभीर गलती

English Usage: His foul in judgment led to significant losses.

Hindi Usage: उसके निर्णय में फाउल ने महत्वपूर्ण नुकसान पहुँचाया।

To commit a foul in a sport.

To make something dirty or unclean.

कुछ गंदा करना

English Usage: The polluted river fouls the beaches downstream.

Hindi Usage: प्रदूषित नदी नीचे की तरफ के समुद्र तटों को गंदा करती है।