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nighttime diaper

An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary incontinence.

ˈnaɪtˌtaɪm ˈdaɪpɚDocumented since 2000s2000sGen Z186 viewsLast reviewed Jun 29, 2026+ Add a definition
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Etymology timeline

Born ~2000 · no dated citations yet
2000BornToday, 2026
Late-Millennial / Web 2.0 eraSee decade cohort →

Definitions

Global
#1·Apr 27, 2026Global

An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary incontinence.

Old flannel receiving blankets are useful as nighttime diapers for Baby, being soft and so absorbent.
For parents

Nighttime diaper means: An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary incontinence.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

For ESL learners

nighttime diaper means: An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary. Register: neutral, standard English. Common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; always check the context before producing it yourself.

Cluster: child
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Global
#2·Apr 27, 2026Global

A diaper or training pants intended to be worn during sleep to prevent bedwetting, often by young children.

Half an hour into the movie Adam fell asleep. By the time we got out, it was eleven-thirty. Either Lara was asleep or else she was faking it. I put Adam in a nighttime diaper, put him in his crib, then quietly slipped into bed.
For parents

Nighttime diaper means: A diaper or training pants intended to be worn during sleep to prevent bedwetting, often by young children.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

For ESL learners

nighttime diaper means: A diaper or training pants intended to be worn during sleep to prevent bedwetting, often by young children.. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.

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For specific readers

Nighttime diaper means: An extra-bulky and absorbent diaper which is intended to be worn during sleep for prolonged wetting, usually by an infant who is a heavy wetter, or by someone with urinary incontinence.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

Why is this section here?

Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.

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