FORBID

[verb] forbidding, [past simple] forbade or old use forbad, [past participle] forbidden - to refuse to allow (something), esp. officially, or to prevent (a particular plan of action) by making it impossibleThe law forbids the sale of cigarettes to people under the age of 16. [T]Driving has been forbidden in the town centre. [+ verb-ing]He's obviously quite embarrassed about it because he forbade me to tell anyone. [+ object + to infinitive](formal) She forbade her children television/forbade television to her children because she thought it was a corrupting influence. [+ two objects](formal) I should like to do more sightseeing but this hot climate forbids it. [T]God/heaven forbid means 'I hope it does not happen'.Heaven forbid (that) his parents should ever hear he lost his wallet with £50 in it."Will she find out about it?" "Heaven forbid!"