1580s, "not influenced, untouched in mind or feeling," from un- (1) "not" + past participle of affect (v.). Meaning "not adopted or assumed, genuine" is recorded from 1590s; that of "not acted upon or altered (by something)" is first attested 1830. Related: Unaffectedly; unaffectedness.
例文
1. The strike shut down 50 airports,but most international flights were unaffected .
ストは50の空港を閉鎖に追い込んだが、ほとんどの国際線は影響を受けなかった。
2.He thought the speech a model of its kind,limpid and unaffected .
彼はこの講演を模範とし、簡潔で流暢で、清新で自然だと思っている。
3.She seemed totally unaffected by what she 'd drunk.