Synonyms for Hunchbacked (same or very similar meaning)
WordNet sense 1 (characteristic of or suffering from kyphosis, an abnormality of the vertebral column):
gibbous, humpbacked, humped, crookback, crookbacked, kyphotic
WordNet sense 2 (not in good physical or mental condition; out of condition):
unfit
From the ODE community, based on WordNet
add/edit