As a deity name
Name 789 of the Ganesha Sahasranāma — Ganesha Purana (Upasana Khanda), as taught by Sage Vyasa / Lord Ganesha
As a Hindi name
वैनायक · adj
[वि॰ स्त्री॰ वैनायकी] विनायक या गणेश संबंधी — Śabdasāgara
वैनायक · noun · masculine
भागवत के अनुसार भूतों का एक गण — Śabdasāgara
As a Sanskrit word
Meaning
(fr. vi-nāyaka) belonging to or derived from Gaṇeśa
Scripturally attested Verified derivationMultiple readings (7)Why this matches what you typed
The spelling you confirmed, वैनायक, 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
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.
vaināyaka a. (kī f.) Belonging to Gaṇeśa; vaināyakyaściraṃ vo vadanavidhutayaḥ pāṃtu cītkāravatyaḥ Māl. 1. 1.
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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