to hold up or serve as a foundation or prop for (something)
Steel girders support the building
to provide (somebody) with a home or provide a basis for their existence or subsistence
to provide (somebody) with a home, food, clothes, etc; to maintain
We have three children to support
to provide a basis for the existence or subsistence of (somebody or something)
The planet could not support life
to endure (something) bravely or quietly; to bear or tolerate
to assist or help (somebody or something), e.g. by giving money or sustaining morale
Her best friend had always supported her when she was in trouble
to approve of or encourage (something or somebody)
to uphold or defend (something or somebody) as valid or right; to advocate
to substantiate or provide (something) with substantiation; to corroborate (something)
Unfortunately, our findings do not support your claim
to argue or vote for (e.g. a political party)
to be an enthusiastic or loyal follower of (e.g. a football team)
to act with (a principal actor)
to perform before (the main act at a concert)
in computing, to work with (e.g. a program or device), or to enable (it) to work