Idiom Breakdown

open someone's eyes

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Definition

To make someone aware of something they did not know or fully understand before; to enlighten someone.

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In Context

"Visiting Africa opened my eyes to what it is like living without clean water."
"I have to admit that Merseyside was the one area of the railway I had little experience of until this year, but two visits […] have opened my eyes to what is an incredibly well-run network, with such friendly staff and locals."

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See Also

eye-opener
scales fall from someone's eyes