MERCILESSNESSES
Scrabble letter values: M3E1R1C3I1L1E1S1S1N1E1S1S1E1S1 = 19
Definition
MERCILESSNESSES is the plural of MERCILESSNESS.
noun MERCILESSNESS: feelings of extreme heartlessness.
Synonyms of MERCILESSNESS: cruelty, pitilessness, ruthlessness