popular的反义词有：unpopular,out of favor,neglected (被人遗忘的),
out-moded,obsolete,antiquated,out-dated,archaic,old-fashioned,(老掉牙)

popular

adj.流行的，大众化的; 民众的，大众的，公众的; 通俗的，普通的，平易的; 〈美俚〉自以为了不得的，骄傲的;

This paid version of the popular free game removes the advertising.

这里指的是热门游戏《和朋友一起填字》(Words With Friends)的收费版，不含广告。

popular的反义词：unpopular

unpopular

adj.不受欢迎的，不流行的; 无人望的; 不得人心的;

Ordinary people haven't always been unpopular.

普通人并非总是不受欢迎。

The parties will share responsibility for unpopular fiscal decisions, which should make them easier to take.

两党将共同对这些不受欢迎的财政举措负责，这应该对于他们来说很容易。

It unsettles egypt and jordan, which have made their unpopular peaces with israel.

这也搅乱了埃及和约旦，他们与以色列进行了那不得人心的和平。

And yet the opinion polls suggest that mrs arroyo went on to become the most unpopular president since marcos.

但现在的民调显示，阿罗约总统成为继独裁者马科斯之后最不受欢迎的总统。

Would they want to defend unpopular euro-judges by voting for a big increase in their powers?

难道这次他们真的想靠投票得来的大权在握来抵抗不得人心的欧盟法官?