ねっする
nessuru

Suru Verb

1. to heat; to heat up

Transitive
みず ねっせられると蒸気 じょうきになる。
mizuwa nesserareruto jōkini naru.
Water changes into vapor when it is heated.
Suru Verb

2. to get excited; to get worked up; to get fired up

Intransitive