熟悉

shúxī
to be familiar with; to know well

CEDICT

Entry Composition

1 熟 shú
  1. ripe; mature
  2. thoroughly cooked; done
  3. familiar; acquainted
  4. experienced; skilled
  5. (of sleep etc) deep; profound
  6. also pr. shóu
2 悉 xī
  1. in all cases
  2. know