Hit bottom is an idiom that means to reach the lowest point or to fail completely. The crossword solutions for this term are SINK (4 letters), FELL (4 letters), SPANK (5 letters), SANK (4 letters), BSIDE (5 letters), and SIDEB (5 letters). SINK and sank refer to the action of going down, while FELL and SPANK refer to the action of falling or being hit. Bside and sideb refer to the idea of being on the other side or the underside of something.