Meaning of (ढृढ़ करना) dhridh karna in english
As verb :
fortify Ex:  It also means figuratively fortify one thing by another
Suggested : to protect or strengthen against attack surround or provide with defensive military works
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(ढृढ़ करना) dhridh karna
can be used as verb.. No of characters: 9 including consonants matras.
Transliteration :
DhRRiDha karanaa