にょっきり
nyokkiri

To-Adverb

1. sticking out prominently (usu. something long and thin); rising up

Onomatopoeia
サブマリンのペリスコープが水中 すいちゅうからにょっきり ていた。
sabumarinno perisukōpuga suichūkara nyokkiri tsukidete ita.
The submarine's periscope was sticking right out of the water.
Other forms: