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sleep through

British  

verb

  1. informal (of a baby) to sleep all night without waking up

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sleep through Idioms  
  1. Sleep without waking for a period of time, usually the night, as in At three months many babies have learned to sleep through . [Mid-1900s]

  2. sleep through something . Fail to pay attention, as in We all slept through the explanation and then had trouble getting the machines started .


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I usually sleep through the massage, but I find it helps relax my body,” he says.

From The Wall Street Journal • Jan. 4, 2026

“Not having racing thoughts, and being able to sleep through the night is a huge win for me,” she told Undark.

From Salon • May 23, 2025

Having a daughter who doesn't sleep through the night, this finding does not surprise me.

From BBC • Apr. 16, 2025

The researchers also simulated the neural effects of sleep through low-frequency electrical stimulation of the visual cortex.

From Science Daily • Nov. 22, 2024

She manages to sleep through the morning racket—until Grandma Knife's big toe prods her, making her yelp.

From "Born Behind Bars" by Padma Venkatraman