无济于事

to no avail / of no use

not to have / no / none / not / to lack / un- / -less

used in place names associated with the Ji River 濟水|济水[Ji3 Shui3] / surname Ji

only used in 濟濟|济济[ji3 ji3]

to cross a river / to aid or relieve / to be of help

used in 濟濟|济济[ji3 ji3]

to go / to take / sentence-final interrogative particle / variant of 於|于[yu2]

(of time or place) in; at; on / (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for / (indicating a source) from; out of / (used in comparison) than / (used in the passive voice) by

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]