To consume a drink quickly

To repel or push back

पीछे धकेलना

English Usage: The sudden wave knocked him back against the wall.

Hindi Usage: अचानक की लहर ने उसे दीवार की ओर पीछे धकेल दिया।

A reverse movement or setback

A situation where an offer or proposal is rejected

प्रस्ताव का अस्वीकृति

English Usage: The deal ended up being a knock-back for many involved.

Hindi Usage: इस डील का अंत कई शामिल लोगों के लिए अस्वीकृति में हुआ।