Definition of look through phrasal verb from the Oxford Advanced American Dictionary

 

look through

 phrasal verb
phrasal verb
 
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Phrasal Verbs

look through somebody

[no passive]
 
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to ignore someone by pretending not to see them She just looked straight through me.

look through something

[no passive]
 
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to examine or read something quickly She looked through her notes before the exam.
See the Oxford Advanced Learner's Dictionary entry: look through