null 
/ˈnʌl/ adjective
/ˈnʌl/ adjective law : having no legal power
▪ The contract was declared null. [=invalid] — often used in the phrase null and void ▪ The law was declared null and void.
▪ The contract was declared null. [=invalid] — often used in the phrase null and void ▪ The law was declared null and void.
