- demanding great effort; exhausting
WordReference Random House Learner's Dictionary of American English © 2026
back•break•ing /ˈbækˌbreɪkɪŋ/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- requiring great work, effort, or strength.
back•break•ing
(bak′brā′king),USA pronunciation adj.
back′break′er, n.
- demanding great effort, endurance, etc.;
exhausting:a backbreaking job.
- back1 + break + -ing2 1780–90
Collins Concise English Dictionary © HarperCollins Publishers::
backbreaking /ˈbækˌbreɪkɪŋ/ adj