developed反义词

反义词是undeveloped，中文意思是adj. 未开发的不发达的未充分发育的

There are many people whose cultures are undeveloped， but the languages they speak are by no means primitive.有许多人他们的文化不发达，但他们说的语言绝不是原始的。

The big losers will be the undeveloped countries， especially in sub-Saharan Africa.