一丝不挂
yī​sī​bù​guà

stark naked

yī​sī​bù​guà stark naked · without a line
  1. 一丝 一絲 yī​sī numeral
    a hint of
    a tiny bit; a trace; an extremely small amount
  2. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. 挂 掛 guà verb
    to hang
    to hang; to suspend; to hitch; to be snagged or caught on something

yī​sī​bù​guà free from all worries
  1. 一丝 一絲 yī​sī numeral
    a hint of
    a tiny bit; a trace; an extremely small amount
  2. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. 挂 掛 guà verb
    to worry
    to be concerned; to be worried about someone or something; to keep in mind