Direct Translations:
* अद्वितीय (advitiya): This literally means "not two" or "not having a second," implying something that stands alone and has no equal. This is the closest to the meaning of "unique" in terms of being one of a kind.
* अनन्य (ananaya): This means "without a second" or "unmatched," emphasizing the lack of any other comparable entity.
Other options:
* विशिष्ट (vishiṣṭa): This translates to "distinctive" or "special," highlighting something that is different and sets itself apart.
* असाधारण (asādhāraṇa): This means "extraordinary" or "uncommon," emphasizing the uniqueness of something that is not ordinary.
* अनुपम (anupama): This means "incomparable" or "matchless," highlighting something that is superior and surpasses all others.
The best word to use depends on the specific context and the nuance you want to convey.