36 Moby Thesaurus words for "touch bottom": become suicidal, come down, decline, degenerate, despair, despond, deteriorate, die, droop, ebb, fade, fail, fall, fall away, fall off, give way, go down, go downhill, go off, go to pot, have a comedown, hit a slump, hit rock bottom, hit the skids, languish, lapse, lose heart, plumb the depths, reach the depths, run down, sink, slide, slip, slump, subside, wane

Source: Moby Thesaurus II by Grady Ward, 1.0