Synonyms for Naked as a jaybird:

adj.

au naturel (adjective)
in the raw, unclothed, in the buff.
starkers (adjective)
peeled, stark naked, in the altogether, raw.

n.

naked as a jaybird (noun)
in the altogether, in the raw, bare-assed, unclothed, in the buff, raw, stark naked, peeled, bare-ass.

Other synonyms:

Other relevant words:
bare-ass, bare-assed, in the altogether, in the buff, in the raw, peeled, raw, stark naked, unclothed.