反义词是least，例如：

1、He once joked， "Sailing is the sport that takes the least energy!"他曾经开玩笑说："帆船运动是消耗能量最少的运动！"

2、It'll take a year， at the very least.这至少需要一年时间。

3、It takes at least an hour to get home from work.下班回家至少得花一个小时。