Synonyms for Scraggy (same or very similar meaning)
WordNet sense 1 (being very thin):
scrawny, skinny, underweight, weedy, boneyWordNet sense 2 (lacking excess flesh):
leanWordNet sense 3 (having a sharply uneven surface or outline):
jagged, jaggy, jaggedWordNet sense 4 (not even or uniform as e.g. in shape or texture):
unevenFrom the ODE community, based on WordNetadd/edit