An onomatopoeic adverb describing things (often thin or stalk-like) sprouting or shooting up one after another.
春になって庭の雑草がにょきにょき生えてきた。
In spring the weeds in the garden started popping up all over.
子どもの描いた絵には、にょきにょき伸びる草がいっぱい描かれている。
The child's drawing is full of grass sprouting up everywhere.
鉢植えに水をあげないと、細い葉がにょきにょき倒れてしまうことがある。
If you don't water the potted plant, its thin leaves may flop though they had been sprouting.
An onomatopoeic adverb indicating rapid growth or sudden emergence (e.g., buildings, plants, people developing quickly).
近年、この地区には新しいビルがにょきにょきと建っている。
In recent years new buildings have been springing up all over this district.
若手選手がにょきにょき力をつけて、チームの主力になった。
Young players rapidly improved and became key members of the team.
町中に新しいカフェがにょきにょき増えている。
New cafés are popping up all over town.