suppori
Describes something fitting perfectly over or around something else, covering it entirely — a hat pulled down over the ears, or being buried under a blanket.
💡Hiding under a blanket — 'She was suppori covered head to toe.'
毛布にすっぽりくるまって寝ている。
She's sleeping suppori wrapped up in a blanket.
The cat was ___ hidden inside the cardboard box.
猫が段ボール箱に○○収まっていた。