Compound Particle (usually used in formal writing and formal speech) (Advanced ㊤ 426)
A compound particle that indicates a period of time/stage (in life) at which some surprising action or state takes place.
Equivalent: In; at; over; while
| (i) Number+Counter | にして | |
| 三歳にして | When someone is three years old | |
| 大学四年にして恋を知る | Someone falls in love for the first time when he/she is a senior in college | |
| (ii) Noun | にして | |
| 一昼夜にして | Something changes in 24 hours (literally: one day and one night) | |
| (iii) Vますながら | にして | |
| 生まれながらにして | When someone is born |
