He lives in the outskirts of town.
The princess was wearing a dress that doesn't suit the season.
I bought some ice cream that had, "If you hit, you get another" written on them, but they were all misses.
The kanji 外 alone means "outside." This word means extremity. How can you remember this? Just think of the れ as a "ray of sunshine." Where you are, in the extremity of space, even the れs of the sun cannot be seen. So, when 外 is combined with れ just think of this.
Let's continue the previous story: You're off in the extremity of the space. You are at the edge, and you look further. All you can see is a sticky yellow haze (はず) out in the infinite beyond.