Meaning of (एक निष्ठा) ek nishtha in english
As noun :
fidelity Ex:  The strength of this fidelity can also vary with sex
Suggested : strict observance of promises, duties, etc
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(एक निष्ठा) ek nishtha
can be used as noun.. No of characters: 9 including vowels consonants matras.
Transliteration :
eka niShThaa