ad hoc 
/ˈædˈhɑ:k/ adjective
/ˈædˈhɑ:k/ adjective 1 : formed or used for a special purpose
▪ The mayor appointed an ad hoc committee to study the project. 2 : made or done without planning because of an immediate need
▪ We had to make some ad hoc changes to the plans. ▪ We'll hire more staff on an ad hoc basis.
▪ The mayor appointed an ad hoc committee to study the project.
▪ We had to make some ad hoc changes to the plans. ▪ We'll hire more staff on an ad hoc basis.
— ad hoc adverb
▪ The decisions were made ad hoc.
▪ The decisions were made ad hoc.
