infatuation
词根词缀：
fatuity n. 愚蠢，愚昧
fatu 笨 + ity 具备某种性质，状况 → 愚蠢，愚昧
fatuous adj. 昏庸的
fatu 笨 + ous 有…性质的，关于…的 → 昏庸的
infatuate v. 使糊涂；使迷恋
in 使… + fatu 笨 + ate 使… → 使糊涂；使迷恋
infatuation n. 热恋；着迷
infatuat 迷恋 + ion 动作或状态 → 热恋；着迷
数据来源：新东方英语词汇速记大全
相关例句：
This is often difficult to determine, for there are no the definitions of love or infatuation.
这个问题常常是难以回答的，因为对于真爱和迷恋，都没有一个确切的定义。
This is not love but a foolish infatuation.
这不是爱情，而是愚蠢的痴迷。
I thought I was in love with Susan, but it was only infatuation.
我以为我爱苏珊，其实那只是一时的感情冲动而已。
The borderline between infatuation and love.
迷恋和爱之间的模糊界线。
There are three types of love. Infatuation, love of family, and love of your spouse.
有三种类型的爱：糊涂的爱，家庭的爱，夫妻的爱。
Teenagers have their own infatuations.
青少年有自己醉心痴迷的东西。