Not many or not enough in number/amount; few, scarce, or infrequent.
この町は若い人が少ないので、夜は静かだ。
There are few young people in this town, so it's quiet at night.
時間が少ないから、手短に話す。
I don't have much time, so I'll speak briefly.
経験が少ないため、その仕事はまだ任せられない。
Because of little experience, I can't entrust that job yet.
雨の日は外出する人が少ない。
On rainy days there are few people going out.