bony dilapidated doddering flat flat-chested fleshless gangling gangly gaunt gawky groggy lank lanky lean lean-fleshed lean-looking meager ramshackle rangy rawboned ricketish rickety rocky scraggy scrawny shaky skeletal skinny spare spidery spindling teetering teetery thin-bellied thin-fleshed tottering tottery tumbledown twiggy undersized underweight unsteady wobbly