Shows mercy is an expression that means to be compassionate and forgiving towards someone. The crossword solutions for this term are SPARES (6 letters), RELENTS (7 letters), and LETSUP (6 letters). SPARES means to refrain from inflicting harm or punishment, RELENTS means to give in or yield to another's wishes, and LETSUP means to become less severe or intense. All of these words imply a sense of mercy and kindness towards another person.