Meaning of (निट्ठि) nitthi in english
As adjective :
hard Ex:  Coal miners were hard hit
Suggested : not soft solid and firm to the touch unyielding to pressure and impenetrable or almost impenetrable
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(निट्ठि) nitthi
can be used as adjective.. No of characters: 6 including consonants matras. The word is used as Verb and/or Adjective in hindi originated from modification of language by locals .
Transliteration :
niTThi