As a deity name
Name 988 of the Gayatri Sahasranāma — Devi Bhagavata Purana, as taught by Sages
As a Hindi name
No reading on this path — this spelling has no entry in our Hindi sources, and no near neighbour is attested there either. We say so rather than invent one.
As a Sanskrit word
Meaning
a g˚ quality, virtue, &c.
Scripturally attestedWhy this matches what you typed
M1 · same meaning "sadguṇāyai" is the dative of "sadguṇa" — the same word in a different grammatical case.
Dictionary citations
sad—guṇa m. a g˚ quality, virtue, R.; Kathās.; BhP. &c.
sad—guṇa mf(ā)n. having g˚ qual˚, virtuous, Kathās.
Caveats
Sources contain errors and engines have limits; every claim above carries its citation so you can verify it. This is guidance about names and their sources — not religious or astrological consultation. How we work · Our sources