judge a book by its cover, one can't
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One can't rely on outward appearances to know what something or someone is really like. For example, He seems very quiet, but you can't judge a book by its cover. [First half of 1900s]
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
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Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.
Words nearby judge a book by its cover, one can't
Judeo-Christian, Judeo-Spanish, Jude the Obscure, Judezmo, judge, judge a book by its cover, one can't, judge advocate, judge advocate general, Judge Lynch, judge-made, Judge not, that ye be not judged
The American Heritage® Idioms Dictionary
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