steal in
高级 (C1) formal
To quietly creep into a place so no one notices you
"She stole in through the back door so as not to wake her parents."
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How to Shadow Native English Speakers to Master Your Pronunciation
English by Jay - Sprout · 3:02
By the way, to nick is to steal in
Isso é Esparta: guerreiros ferozes do mundo antigo – Craig Zimmer
Seja curioso — TED-Ed · 2:35
Spartan boys were encouraged to steal in order to survive,