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in one's birthday suit

in one's birthday suit

2 8.6
Completely without clothes like when you were born
  • idiom
  • NSFW
translation icon : en pelotas
  • After a long day at the beach, I came home and relaxed in my birthday suit.

Examples

  • So what if men like to look at you in your birthday suit.

  • He was joking when he said he prefers to work from home in his birthday suit.

  • Everybody else is in their birthday suit.

  • "It's hard to imagine what that poor girl will find to do in Clayton's house, hanging around in her birthday suit," Molly said.

    Fiction book (1995)
  • On sunny days, I often lounge in my backyard, happily enjoying the warmth in my birthday suit.

Synonyms

naked
vsin one's birthday suit
  • NSFW
982 1.0

Not wearing any clothes on the body

uses a birth metaphor rather than plain literal absence of clothing
naked as the day one was born
vsin one's birthday suit
  • NSFW
7.6

Completely without clothes, as when someone is born

is the idiomatic everyday form rather than a literal description
naked as the day you were born
vsin one's birthday suit
  • NSFW
7.4

Completely without clothes like at birth

uses a general third person birth image instead of direct address
mother-naked
vsin one's birthday suit
  • NSFW
9.9

Completely without clothes like a new baby

is the standard idiom that expresses the same birth image without extra emphasis
in the altogether
vsin one's birthday suit
  • NSFW
9.9

A state of having no clothes on

uses a birth-based image rather than this general idiomatic reference
in your birthday suit
vsin one's birthday suit
  • NSFW
8.7

Completely naked

adds a birth-related image to the same idea instead of plain wording

Surface Forms

Morphology

in + one + birthday + suit

The meaning 'completely naked' is not directly derivable from the literal constituents: 'birthday' and 'suit' normally suggest a garment rather than the absence of clothing, so a learner who knows the words is likely to be misled. Only a cultural/metaphorical inference (the 'suit' you were born in = no clothes) yields the idiomatic sense, which is language-specific and not reliably predictable for an average B1 learner.

Etymology

In one's birthday suit comes from a joking image: one popular story says the only 'suit' you had when you were born was nothing, so the words birthday and suit make you picture someone with no clothes. So the phrase means 'completely naked'.