In one's birthday suit and Unclothed

In one's birthday suit

In one's birthday suit adjective - As naked as at birth.

Unclothed and in one's birthday suit are semantically related In some cases you can use "Unclothed" instead an adjective phrase "In one's birthday suit".

Unclothed

Unclothed adjective - Not wearing clothing.

In one's birthday suit and unclothed are semantically related in without a stitch on topic. You can use "In one's birthday suit" instead an adjective "Unclothed". informal substitute
Cite this Source
Unclothed and In one's birthday suit. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/in_one_s_birthday_suit/unclothed
In one's birthday suit & Unclothed. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/in_one_s_birthday_suit/unclothed>.
Unclothed or In one's birthday suit. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/in_one_s_birthday_suit/unclothed.