Causing or likely to cause damage or destruction.

विनाशकारी

English Usage: His ruinous spending led to bankruptcy.

Hindi Usage: उसकी विनाशकारी खर्च ने दिवालिया कर दिया।

In a way that is experienced or done by two or more parties.

सम्पूर्णतः

English Usage: They agreed to a mutually beneficial agreement.

Hindi Usage: उन्होंने एक सम्पूर्णतः लाभकारी समझौते पर सहमति व्यक्त की।

Extremely damaging or destructive.

विनाशकारी

English Usage: The ruinous effects of the war were evident.

Hindi Usage: युद्ध के विनाशकारी प्रभाव स्पष्ट थे।

Exchanging or shared between two or more parties.

आपसी

English Usage: They had a mutually respectful relationship.

Hindi Usage: उनका आपसी सम्मानपूर्ण संबंध था।