1) Bellowed 2) Bellowed loudly 3) Clamored 4) Complained like Simba 5) Cried like a lion 6) Emulated a lion 7) Emulated Simba 8) Gave a guffaw 9) Guffawed 10) Had a big laugh 11) Had a great laugh 12) Howled like a lion 13) Howled with glee 14) Howled with laughter 15) Laughed heartily 16) Laughed loud Found on https://www.crosswordclues.com/clue/roared