素昧平生 sù mèi píng shēng

DEFINITIONS

  1. to have never met sb before (idiom); entirely unacquainted
  2. a complete stranger
  3. not to know sb from Adam

CHARACTERS

素 sù
HSK 5
white (silk); plain; vegetarian; formerly; normally
昧 mèi
HSK 6
obscure, dark; darken
平 píng
HSK 3
flat, level, even; peaceful
生 shēng
HSK 1
life, living, lifetime; birth