developed反義詞

反義詞是undeveloped，中文意思是adj. 未開發的不發達的未充分發育的

There are many people whose cultures are undeveloped， but the languages they speak are by no means primitive.有許多人他們的文化不發達，但他們説的語言絕不是原始的。

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