せんすい
diving; submerging; going underwater
JLPT N1 Common word
Noun, Suru verb, Intransitive
潜水せんすいして泳げるかい。
Can you swim underwater?
この潜水せんすい時計とけいは少すこし値段ねだんが高たかすぎます。
This diver's watch is a little too expensive.