1) upon, on, at, by, before
2) of position, on, at, by, over, against
3) to, over, on, at, across, against
Part of Speech: preposition
A primary preposition properly meaning superimposition (of time, place, order, etc.), as a relation of distribution [with the genitive case], that is, over, upon, etc.; of rest (with the dative case) at, on, etc.; of direction (with the accusative case) towards, upon, etc.: - about (the times), above, after, against, among, as long as (touching), at, beside, X have charge of, (be-, [where-]) fore, in (a place, as much as, the time of, -to), (because) of, (up-) on (behalf of) over, (by, for) the space of, through (-out), (un-) to (-ward), with. In compounds it retains essentially the same import, at, upon, etc. (literally or figuratively).