func·tion·ate \ˈ ̷ ̷ ̷ ̷ˌnāt\intransitive verb (-ed/-ing/-s) : to carry on a natural especially organic function < interferes with the normal action of the auricle, rendering it … powerless to functionate properly — F.A.Faught > • func·tion·a·tion\ˌ ̷ ̷ ̷ ̷ˈnāshən\noun-s