To make ineffective or invalid.

अमान्य करना

English Usage: The new evidence may be negating the earlier findings.

Hindi Usage: नई साक्ष्य पहले के निष्कर्षों को अमान्य कर सकती है।

The contradiction or denial of something.

नकार

English Usage: The negation of the proposal was unexpected.

Hindi Usage: प्रस्ताव का नकार अप्रत्याशित था।

Expressing denial, disagreement, or refusal.

नकारात्मक

English Usage: She had a negative response to the suggestion.

Hindi Usage: उसने सुझाव पर नकारात्मक प्रतिक्रिया दी।