1. Abounding with or resembling weeds
   "a weedy path"; "weedy plants that take over a garden"
    
2. Being very thin; below a desirable or healthy weight
   "pale weedy hands";
   - scraggy, scraggly, bony, scrawny, skinny, underweight

Derived forms: weedier, weediest

See also: lean, meager [N. Amer], meagre [Brit, Cdn], thin

Antonym: weedless