GRUELINGLY
Scrabble letter values: G2R1U1E1L1I1N1G2L1Y4 = 15
Definition
GRUELINGLY is the adverb form of GRUELING.
adjective GRUELING: characterized by effort to the point of exhaustion.
Synonyms of GRUELING: arduous, backbreaking, gruelling, hard, heavy, laborious, operose, punishing