ugliest最高级uglier比较级adj.丑陋的;难看的;令人不快的;危险的;险恶的;凶险的;The ugly scene in the study was still etched in her mind书房里丑陋的一幕在她脑海中依旧清晰。

柯林斯高阶英汉双解学习词典。Often outsize clothes are made from cheap fabric and look like ugly tents.超大号服装常常质地较差，而且看上去好似丑陋的帐篷。

ugly的比较级是 uglier 最高级是 ugliest

看看例句吧：

Rong is uglier than Damn.

(Rong比Damn还丑)

因为该词结尾字母y前面是辅音字母，故在变为比较级和最高级的时候要把y 变成 i 再加er或est.

类似的还有：

early earlier earliest

happy happier happiest