rocky β inclined or likely to rock; tottering; shaky; unsteady.
rotten β decomposing or decaying; putrid; tainted, foul, or bad-smelling.
senile β showing a decline or deterioration of physical strength or mental functioning, especially short-term memory and alertness, as a result of old age or disease.
spent β simple past tense and past participle of spend.
spindly β long or tall, thin, and usually frail: The colt wobbled on its spindly legs.
supine β lying on the back, face or front upward.
tender β soft or delicate in substance; not hard or tough: a tender steak.
undependable β capable of being depended on; worthy of trust; reliable: a dependable employee.
unsound β not sound; unhealthy, diseased, or disordered, as the body or mind.
unsubstantial β not substantial; having no foundation in fact; fanciful; insubstantial: an unsubstantial argument; unsubstantial hopes.
wasted β not used or in use: waste energy; waste talents.
wavering β to sway to and fro; flutter: Foliage wavers in the breeze.
weakly β weak or feeble in constitution; not robust; sickly.
deficient β If someone or something is deficient in a particular thing, they do not have the full amount of it that they need in order to function normally or work properly.
immature β not mature, ripe, developed, perfected, etc.