외양이나 성질이 크게 바뀌어 원래의 모습을 찾거나 누구인지 알 수 없는.
Impossible to identify or recognize, typically because of significant changes, damage, or disguise.
예문:
"The city center was left unrecognizable after the extensive urban renewal project."
"He had aged so much in twenty years that he was almost unrecognizable to his former classmates."
"The car was crushed into an unrecognizable mass of metal in the accident."