すぽっと

すぽっと, スポッとsupotto

adverb

1. snugly (into hole, container, etc.)
2. tightly (fitting, covering)
3. firmly
4. (with a) pop (i.e. sound of a cork, etc. being pulled out of a hole in one movement)
5. with a plop
6. (fall) straight

Study it in Yanamino