रूढ़िवादी करना  =  do
To make sb/sth become fixed and unable to change or develop

जीवाश्म बनाना  =  fossilize
To make something become a fossil

जीवाश्म बनना  =  fossilize
The bones fossilised over a very long period of time.

रूढ़िवादी होना  =  fossilize
He allowed his judgement and intellect to fossilise.