What is Another word for sustentation?

Here are some words that can be used as synonyms for "sustentation," depending on the specific context:

General:

* Support

* Maintenance

* Upkeep

* Nourishment

* Provision

* Supply

* Preservation

More specific:

* Nourishment (if referring to food and drink)

* Subsistence (if referring to basic needs for survival)

* Survival (if referring to staying alive)

* Prolongation (if referring to extending life or existence)

* Perpetuation (if referring to keeping something going indefinitely)

* Sustaining (as a verb, meaning to keep something going)

The best word to use will depend on the specific situation.