Sat works so well since it hits Sanskrit too: The Sanskrit word sat (सत्) has many meanings, including:

Being, existence

Real, actual

True, good, right

Absolute reality

Fact

Brahman

That which is unchangeable

That which has no distortion

That which is beyond distinctions of time, space, and person

That which pervades the universe in all its constancy

Eternal existence and goodness

Auspicious action