uncheckable

adjective4

1. •
   Not possible to check; unable to be checked.

   • But the closed nature of the models used for virtual transactions, where nothing is actually bought or sold, means their accuracy is uncheckable: there is no "real world" aspect to the process. — 2012
2. •
   Not possible to verify (confirm).
3. •
   Not possible to mark with a check mark (a tick mark).
4. •
   Not possible to restrain and control.