aparivartanīya
Monier-Williams Sanskrit-English Dictionary (1st ed.)
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p. 52, col. 1.
aparivartanīya a-parivartanīya, as, ā, am, not to be exchanged.
Monier-Williams Sanskrit-English Dictionary (2nd ed.)
☞
p. 51, col. 2.
a-parivartanīya mfn. not to be exchanged.