(せっ)する

せっする
suru verb (special class)
to come in contact with; to adjoin; to receive, to treat
1. to come in contact with, to touch, to adjoin
To be physically adjacent to or in contact with something. Also used for encountering information, culture, or experiences.
(うみ)(せっ)する(まち)()んでいる。
I live in a town that borders the sea.
外国(がいこく)文化(ぶんか)(せっ)する機会(きかい)()えた。
Opportunities to encounter foreign culture have increased.
自然(しぜん)(せっ)することで(こころ)(いや)される。
Being in contact with nature heals the mind.
2. to receive, to treat, to deal with
To interact with or treat a person in a particular manner.
(きゃく)丁寧(ていねい)(せっ)する。
To treat customers politely.
()どもには(やさ)しく(せっ)してください。
Please be gentle with the children.
(かれ)はだれに(たい)しても公平(こうへい)(せっ)する(ひと)だ。
He is someone who treats everyone fairly.

USAGE:
A special-class suru verb (not noun + する). Conjugates as (せっ)する, (せっ)して, (せっ)した. Sense 1 covers both physical adjacency and figurative contact (encountering culture, nature, art). Sense 2 focuses on interpersonal treatment and is very common in business and customer service contexts.

COMMON COLLOCATIONS:

  • ~に(せっ)する: to border, to be adjacent to; to come into contact with
  • (ひと)(せっ)する: to deal with people
  • 態度(たいど)(せっ)する: to treat with a certain attitude

SIMILAR WORDS:

  • ()れる: to touch (physical contact; also figurative)
  • 隣接(りんせつ)する: to be adjacent (more formal, physical only)