to sneak up
01
忍び寄る, こっそり近づく
to approach or move towards someone or something quietly, carefully, and usually without being noticed
例
I always sneak up on my friends during surprise parties. ( present simple )
私はサプライズパーティーの間、いつも友達にこっそり近づきます。
忍び寄る, こっそり近づく
