PERNICIOUSNESS Scrabble 18 Words With Friends 23 Scrabble letter values: P3E1R1N1I1C3I1O1U1S1N1E1S1S1 = 18 Definition noun grave harmfulness or deadliness. — synonyms: toxicity See all 1164 words you can make from PERNICIOUSNESS → 14-letter words Words starting with P Words ending with S ← Unscramble different letters