1) Au naturel 2) Bare 3) Bare-ass 4) Bare-assed 5) Bare-breasted 6) Bared 7) Bareheaded 8) Barelegged 9) Bottomless 10) Braless 11) Clothesless 12) En deshabille 13) Exposed 14) Garmentless 15) Half-clothed 16) In dishabille 17) In the altogether 18) In the buff 19) In the raw 20) In your birthday suit 1) Au naturel 2) Bare 3) Bared 4) Bareheaded 5) Barelegged 6) Braless 7) Clothesless 8) Garmentless 9) Naked 10) Nude 11) Peeled 12) Raimentless 13) Seminude 14) Starkers 15) Unadorned 16) Unappareled 17) Unattired 18) Unclad 19) Undecorated 20) Underclothed 21) Ungarbed 22) Ungarmented 
• (a.) Divested or stripped of clothing. • (a.) Not yet clothed; wanting clothes; naked.
[adj] - not wearing clothing
adjective not wearing clothing