1improving a situation; having a helpful or useful effect synonym advantageous, favorable2 A good diet is beneficial to your health. They finally came to a mutually beneficial agreement. opposite detr [..]

mid-15c., "helpful, advantageous," from Middle French bénéficial and directly from Latin beneficialis "pertaining to a favor," from beneficium (see benefice). Related: Beneficially [..]

helpful or providing benefits.

promoting or enhancing well-being; "an arms limitation agreement beneficial to all countries"; "the beneficial effects of a temperate climate"; & [..]

adj. Helpful.

1 : providing benefits or advantages 2 : receiving or entitling one to receive an advantage, benefit, or use [a shareholder] [a estate] ben·e·fi·cial·ly [-shə-lē] ...

receiving advantage, use, or benefit.

(adj) promoting or enhancing well-being

Helpful to humans.

An organism that provides a service, or behaves in such a way, that is favorable to someone or something else.

producing or promoting a favorable result; advantageous; beneficial insects are insects that work in ways that are helpful to an ecosystem, like pollination or pest control

Helpful or good to something or someone. *(''doing harm to someone'') *(''doing no harm; doing neither harm nor good'')