Adjectives

(s)scraggy, scraggly, boney, bony, scrawny, skinny, underweight, weedybeing very thin“a child with skinny freckled legs”, “a long scrawny neck”, “pale bony hands”
(s)scrawny, scrubby, stuntedinferior in size or quality“scrawny cattle”, “scrubby cut-over pine”, “old stunted thorn trees”