ichidan verb, intransitive verb
increase; multiply; grow in number
General intransitive verb for something becoming more in number, amount, or degree. 殖える is often used for population growth, breeding, or capital appreciation.
Antonyms: 減る
最近、外国人の観光客が増えている。
Recently, the number of foreign tourists has been increasing.
I gained weight due to lack of exercise.
この池では鯉がどんどん殖えている。
The carp in this pond are multiplying rapidly.