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in your birthday suit

in your birthday suit

8.7
Completely naked
  • idiom
  • NSFW
translation icon : desnudo
  • Don't walk around in your birthday suit in public!

Examples

  • He answered the door in his birthday suit, shocking the delivery driver.

  • Caught in the hallway in her birthday suit, she quickly grabbed a towel to cover up.

  • After the swim, the children ran around the locker room in their birthday suits.

  • He loves to swim in his birthday suit during the summer.

  • After the swim, the children ran around the locker room in their birthday suits.

  • Caught in the hallway in her birthday suit, she quickly grabbed a towel to cover up.

  • He answered the door in his birthday suit, shocking the delivery driver.

Synonyms

naked
vsin your birthday suit
  • NSFW
982 1.0

Not wearing any clothes on the body

uses a figurative idiom with imagery rather than the plain statement
nude
vsin your birthday suit
  • NSFW
89 3.7

Not wearing any clothes

is the idiomatic image rather than a formal artistic term
in the buff
vsin your birthday suit
  • NSFW
6 9.3

Not wearing any clothes

is the neutral image without the marked casual tone
in one's birthday suit
vsin your birthday suit
  • NSFW
2 8.6

Completely without clothes like when you were born

is the personal variant rather than the impersonal phrasing
naked as the day you were born
vsin your birthday suit
  • NSFW
7.4

Completely without clothes like at birth

is the general phrase without the explicit origin image
naked as the day one was born
vsin your birthday suit
  • NSFW
7.6

Completely without clothes, as when someone is born

is the personal variant addressing someone directly rather than generally
mother-naked
vsin your birthday suit
  • NSFW
9.9

Completely without clothes like a new baby

is the common idiom without the extra intense origin image
in the altogether
vsin your birthday suit
  • NSFW
9.9

A state of having no clothes on

is the everyday expression rather than an old-fashioned idiom

Antonyms

1 1.0

Wearing special clothes for an occasion, for example a party

1 1.0

Wearing clothes to cover the body

How Dressed

formal
1 3.5
well-dressed
29 2.4
dressed
1 1.0
half-clothed
  • NSFW
1 4.6
in your birthday suit
  • NSFW
8.7

Surface Forms

Morphology

in + your + birthday + suit

Although the individual words ('birthday' + 'suit') literally suggest an item of clothing, the idiomatic meaning 'completely naked' is the opposite of that compositional sense and cannot be predicted from the parts. This ironic, conventionalized usage is language-specific and not transparently derivable, so a B1 learner who knows the words is unlikely to infer the correct meaning without prior exposure.

Etymology

In your birthday suit comes from a joking idea that the birthday suit is the clothes you had when you were born, which is nothing. So, saying someone is in their birthday suit means they are 'completely naked'.