The most commonly-used equivalent in modern Hindi is cunautī, which has a usage more or less equivalent with the English term (as opposed to, say, lalakār, which is only used for a verbal call to fight, etc).  Earlier Hindi texts use some of the Sanskrit terms mentioned earlier.

Tyler
 

On Fri, May 11, 2012 at 7:04 AM, shrinivasa varakhedi <shrivara@gmail.com> wrote:
Similarly we have another word which does probably does not find a match in Sanskrit - CHALLENGE!

what could be the sanskrit term for this ? Do we have any word even in other Indian Languages?

shrivara

On 02-May-2012, at 3:43 PM, Robert Zydenbos wrote:

> In Kannada, the commonly used word in ādhyātmikate (which of course is Sanskrit ādhyātmikatā), but the same word also seems to be used as a supposed equivalent for 'spirituality'. As Dominik already said, it seems we have another example of incommensurability here.
>
> RZ
>
> On Apr 29, 2012, at 10:53 PM, Dominik Wujastyk wrote:
>
>> You might look at Apte's Eng-Skt dict for some ideas.
>>      • http://www.sanskrit-lexicon.uni-koeln.de/scans/AEScan/AEScanjpg/ae0302-myope.jpg
>> But as always with such queries (like last year's 'What's the Sanskrit for "go with the flow"?'), one has first to ask whether there is a Sanskritic concept that might correspond to English "mysticism."   And, most probably, there isn't, quite.  Much interesting work has been done on incommensurability in translation theory.
>>
>> Dominik
>>
>>
>> On 29 April 2012 13:49, Harsha Dehejia <harshadehejia@hotmail.com> wrote:
>> Friends~
>>
>> What is the best Sanskrit word for mysticism?
>>
>> Regards.
>>
>> Harsha
>
> -----
> Prof. Dr. Robert J. Zydenbos
> Institute of Indology and Tibetology
> Department of Asian Studies
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