x1 supports/holds up/is underpinning of/[helps] x2 against force/opposition x3 with/by means x4.
Also aids; (adjective:) x1 is dependable, reliable (such reliability may be transient; this is not the usual sense of 'reliable' or 'dependable'); (x2 is object/event). See also bradi, darlu, fapro, sidju, tugni, bongu, ckana, cpana, loldi, sanli, selfu.