As a deity name
Name 519 of the Lakshmi Sahasranāma — Skanda Purana / Sanat Kumara Samhita, as taught by Sages Sanatkumara and Devotees
As a Hindi name
Nearest attested word 'वैनायकी' does not appear as a word in our Hindi sources. The nearest word is वैनायक, meaning [वि॰ स्त्री॰ वैनायकी] विनायक या गणेश संबंधी. — Śabdasāgara nearest word: वैनायक — a suggestion, not a meaning
As a Sanskrit word
Meaning
(fr. vi-nāyaka) belonging to or derived from Gaṇeśa — feminine form of vaināyaka
Scripturally attestedWhy this matches what you typed
M1 · same meaning "vaināyakī" is the feminine form of "vaināyaka" — the same word with the feminine ending, recorded by the dictionary's own gender marker on that entry.
Dictionary citations
vaināyaka mf(ī)n. (fr. vi-nāyaka) belonging to or derived from Gaṇeśa, SāmavBr.; AgP.; Kāv.
vaināyaka m. pl. N. of a partic. class of demons = vināyaka, BhP.
Caveats
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