As a deity name
Name 268 of the Rama Sahasranāma — Padma Purana / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
Name 46 of the Surya Sahasranāma — Bhavishya Purana, as taught by Lord Brahma / Sages
Name 217 of the Vishnu Sahasranāma — Mahabharata (Anushasana Parva), as taught by Bhishma to Yudhishthira on his deathbed
As a Hindi name
वाचस्पति · noun · masculine
बृहस्पति · शब्द प्रतिपालक · पुष्य नक्षत्र (को॰) — Śabdasāgara
As a Sanskrit word
Meaning
‘lord of voice or speech’, N. of a divine being (presiding over human life which lasts as long as there is voice in the body; applied to Soma, Viśva-karman, Prajā-pati, Brahmā &c.…
Scripturally attested Verified derivationMultiple readings (2)Why this matches what you typed
The spelling you confirmed, वाचस्पति, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
vācas—pati (vācas-), m. ‘lord of voice or speech’, N. of a divine being (presiding over human life which lasts as long as there is voice in the body; applied to Soma, Viśva-karman, Prajā-pati, Brahmā &c., but esp. to Bṛhas-pati, who is lord of eloquence, preceptor of the gods, and regent of the planet Jupiter), RV.; AV. &c.
a master of speech, orator, BhP.
N. of a Ṛṣi, a lexicographer, a philosopher &c., Sarvad.; Uṇ., Sch. &c.
vācaspati m. (-tiḥ) VṚHASPATI: see the last. E. vāc speech, in the sixth case, pati master.
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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