For indicating purpose:
* कृते (kṛte): This translates to "for the sake of" or "for the purpose of".
* अर्थे (arthe): This means "for the sake of" or "with the purpose of".
* निमित्तं (nimittaṃ): This translates to "for the reason of" or "on account of".
For indicating recipient:
* अर्थे (arthe): This can also mean "for someone" or "to someone."
* प्रति (prati): This means "to" or "towards" and can be used for someone or something.
For indicating duration:
* कालेन (kālena): This means "for a period of time".
For indicating benefit:
* हितार्थे (hitārthe): This translates to "for the benefit of".
Examples:
* अहं भोजनं कृते (ahaṃ bhojanam kṛte): I am eating *for the sake of* nourishment.
* तव अर्थे (tava arthe): *For you.*
* पंच वर्षाः कालेन (pañca varṣāḥ kālena): *For five years.*
The best Sanskrit word to use will depend on the specific context and the meaning you want to convey.