underdeveloped
1. [ adjective ] relating to societies in which capital needed to industrialize is in short supply
Synonyms: developing
Related terms: nonindustrial
2. [ adjective ] not yet fully developed
Related terms: immature
3. [ adjective ] (of a photograph) lacking in contrast because it was left in the developer for less than the required time
Related terms: photography flat
Similar spelling:   underdevelop
  underdevelopment
  underachieve
  underhanded
  underachiever