As a deity name
Name 353 of the Durga Sahasranāma — Kula Arnava Tantra / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
As a Hindi name
तपोनिष्ठ · noun · masculine
तपस्वी — Śabdasāgara
As a Sanskrit word
Meaning
practising austerities
Scripturally attested Verified derivationMultiple readings (3)Why this matches what you typed
The spelling you confirmed, तपोनिष्ठ, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Gender counterpart
The kosha attests this stem in the feminine, the masculine, and the neuter — the same name serves without alteration.
Dictionary citations
tapo—niṣṭha mfn. practising austerities, Mn. iii, 134; Yājñ. i, 221.
taponiṣṭha mfn. (-ṣṭhaḥ-ṣṭhā-ṣṭhaṃ) Performing penance, practising austerities. E. tapas, and niṣṭha engaged in.
Alternative readings
More than one analysis survives full verification. That ambiguity is real, so we show every reading rather than pick one silently.
Caveats
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