This is the 12889th most frequent Korean word.
도운
The Korean word "도운" is the past tense modifier form of "돕다," meaning "helped" or "assisted."
'도운' here is used as a past descriptive term to indicate the act of having been helped.
도운 기억은 잊을 수 없을 정도로 소중합니다.
The memory of being helped is so precious that it cannot be forgotten.
In this context, '도운' functions as a past descriptor for the project that was aided or helped by me.
내가 도운 프로젝트가 성공하길 바랍니다.
I wish success for the project I helped on.
Here, '도운' is used as the past tense adjective form derived from the verb '돕다' (to help), describing the friend.