Question

그 사람이 내 친구라도 나는 그와 여행을 안 갈 거야 -아/어도 attached to the copula -이다 forms -이어도 that can occur merged into -여도. However, the -이라도 alternative of -이어도 is very common and is considered to be standard Korean. -이라도 can occur shortened into -라도.Aside from the contrast function of -아/어도, -이라도 also occurs in particle-like role conveying the meaning of 'at least' or 'even'.When used with interrogative pronouns like 누구, 어디, 언제, 어떻게, etc., -라도 adds the meaning of 'any': anyone, anywhere, any time, any way.

Accepted Answer

Regardless of if that person is my friend, I won't travel with him

Front	그 사람이 내 친구라도 나는 그와 여행을 안 갈 거야
Back	Regardless of if that person is my friend, I won't travel with him
Notes	-아/어도 attached to the copula -이다 forms -이어도 that can occur merged into -여도. However, the -이라도 alternative of -이어도 is very common and is considered to be standard Korean. -이라도 can occur shortened into -라도. Aside from the contrast function of -아/어도, -이라도 also occurs in particle-like role conveying the meaning of 'at least' or 'even'. When used with interrogative pronouns like 누구, 어디, 언제, 어떻게, etc., -라도 adds the meaning of 'any': anyone, anywhere, any time, any way.

이라도 이어도 Occur Meaning 그 사람이 내 친구라도