Not subject to change or modification; unalterable.

(in grammar) Not capable of being declined or inflected.

अव्यय

English Usage: The word 'she' is indeclinable, remaining the same regardless of grammatical case.

Hindi Usage: 'वह' शब्द अव्यय है, जो व्याकरणिक विभक्ति के बावजूद समान रहता है.