From Longman Dictionary of Contemporary Englishlook through somebody/something phrasal verb1 LOOK FORto look for something among a pile of papers, in a drawer, in someone’s pockets etc SYN go through I’ve looked through all my papers but I still can’t find the contract.2 IGNOREto not notice or pretend to not notice someone you know, even though you see themlook straight/right through somebody I saw Fiona in the street yesterday and she looked straight through me. → look→ See Verb table
Examples from the Corpus
look through • It is like looking through a magic window into the real world of natural irradiation.• The driver's door was open and kneeling behind it was the man looking through binoculars.• So you can listen to, and look through, the Aerius i at the same time.• Eleanor looked through the door; she indicated that there were other patients waiting.• As thorough as the Yankees' win looked through the first seven innings, it was ordained to finish in crisis.• The rector raised up from his seat in the booth and looked through the front window.• He looked through the pile, trying to decide which one to pick.• So instead, what I do is just stand outside and look through the window.look straight/right through somebody• In the lift at work doctors look right through Babur as if he did not exist.• His eyes seemed to look right through her and into the most secret places of her soul.• If not, she will pretend to look straight through him and pick at a plant leaf hoping he will go away.• Untraveledroadie: You look right through me.• Then, one day, they just look right through you. 