exhaustive (adj) - including or considering all possibilities; fully comprehensive; tending to drain or deplete [ig-zaws-tiv]
BREAKDOWN: EX- (out) + HAUST- (to draw up) + -IVE (act of)
exhaust means to partially or completely use up or drain resources or reserves; to tire out
exhaust as a noun refers to air or waste gases emitted by working machinery
“We do not fear being called meticulous, inclining as we do to the view that only the exhaustive can be truly interesting.” —Thomas Mann