密切

mìqiè
  1. close
  2. familiar
  3. intimate
  4. closely (related)
  5. to foster close ties
  6. to pay close attention

CEDICT

Entry Composition

1 密 mì
  1. dense; close; thick
  2. intimate; close
  3. (bound form) secret; confidential
  4. (Internet slang) to send a private message to (sb); to DM
2 切 qiè
  1. definitely; absolutely (not)
  2. (scoffing or dismissive interjection) Yeah, right.; Tut!
  3. to grind
  4. (bound form) close to
  5. (bound form) eager
  6. to correspond to
  7. (used to indicate that the fanqie 反切 fǎnqiè system should be applied to the previous two characters)