Compounds of ないか

• ないか
  (exp) (1) (used to ask a question in the negative) won't (hasn't, isn't, doesn't, etc.)
  (2) (used to make invitations, express desires or give indirect commands) won't you
• じゃないか
  (exp) (1) questioning (something)
  (2) let's do (something)
  (P)
• ではないか
  (exp) (1) questioning (something)
  (2) let's do (something)
  (P)
• ないのではないか
  (exp) I think (something) won't (something)
  probably (something) isn't (something)
• しないのではないか
  (exp) I think (something) won't (something)
  probably (something) isn't (something)
  (P)
• 何かいい手はないか
  (exp) what would be a good way to do it?
• なにかいい手はないか
  (exp) what would be a good way to do it?