矮 (ǎi): (사람이) 키가 작은; (벽 등이) 낮은; (지위가) 뒤떨어지는; 더 낮은; (사람이나 동물의 키가) 작은; (벽, 건물 등이) 낮은; (지위나 수준이) 뒤떨어지는; ~보다 낮은

He is half a head shorter than me.

This wall is very low; it's easy to climb over.

Even though he is short, he is quite strong.

This low stool is for children to sit on.

In class, his grades are a notch lower than others.