LABORIOUSNESS Scrabble 15 Words With Friends 19 Scrabble letter values: L1A1B3O1R1I1O1U1S1N1E1S1S1 = 15 Definition noun the quality of requiring extended effort. — synonyms: operoseness, toilsomeness See all 1310 words you can make from LABORIOUSNESS → 13-letter words Words starting with L Words ending with S ← Unscramble different letters