専せん心しん

noun, noun or participle which takes 'suru', intransitive verb

undivided attention; concentration; devotion

Implies focusing one's whole mind on a single task or purpose, often used in formal or serious contexts. Commonly appears as 専心する or 専心に.

• 彼かれは研けん究きゅうに専せん心しんしている。

  He is devoting himself to his research.

• 専せん心しん努ど力