blank cheque 
noun
1A signed cheque with the amount left for the payee to fill in.He testified that he signed blank cheques, the details of which would be filled in later....
- She had a signed blank cheque of mine and I told her the exact amount to fill in.
- We should pay our fair share, but not give a blank cheque for others to fill in and sign.
1.1An unlimited freedom of action: the elections did not hand the president a blank cheque to carry on as before...
- Ministers admitted last week that their promised package of relief to the countryside was effectively a blank cheque.
- He has the faith of a true believer and the blank cheque that may only be available to him once in a lifetime.
- We should oppose the usual practice whereby they demand that the Council give them a blank check to conduct a war any way they want.
- hypercritical
- hypercritically
- hypercube
- hyperdiploid
- hyperdiploidy
- hyperdrive
- hyperemesis
- hyperemesis gravidarum
- hyperemia
- hyperesthesia
- hyperextend
- hyperextension
- hyperflier
- hyperfocal distance
- hypergamy
- hyperglycaemia
- hyperglycaemic
- hyperglycemia
- hypergolic
- hypergranulation
- hypericin
- hypericum
- hyperimmune
- hyperimmunized
- hyperinflation