to use up, to exhaust, to run out of, to devote oneself (to), to do one's utmost (for), to serve, to work (for a cause), to do to exhaustion, to do completely, to do fully
理不尽【りふじん】
unreasonable, irrational, outrageous, absurd
論じ尽くす【ろんじつくす】
to discuss fully, to discuss from every angle, to deal exhaustively with (an issue)