Slender, Slim Synonyms and Antonyms

Thin, not heavy
(Adjective)
Antonyms:
  1. overweight
  2. heavy
  3. fat
  4. plump
  5. chubby
  6. thick
Inadequate, flimsy
(Adjective)
Antonyms:
  1. adequate
  2. sufficient
  3. reasonable
  4. sensible