fattening
v. 养肥（fatten 的现在分词）
adj. 使人发胖的；正被养肥的；用于养肥禽畜的
例句
Some foods are more fattening than others.
有些食物比较容易使人发胖。
《柯林斯英汉双解大词典》
This stuff is not just fattening.
这东西不只是会让人发胖。
Herds are fattening on the clover of early spring.
牧群吃早春的苜蓿而长膘。
