1. (a.) Pertaining to, or connected with, a function or duty; official.

2. (a.) Pertaining to the function of an organ or part, or to the functions in general.

acting active adjectival advantageous adverbial agential agentival agentive appropriate at work attributive banausic behavioral beneficial commodious conjunctive copulative correct effective effectual efficacious efficient employable essential expedient fitting formal functioning glossematic go going going on good for grammatic handy helpful important in exercise in force in hand in operation in play in practice in process in the works inaction industrial intransitive linking managerial manipulational neuropsychiatric nominal of general utility of help of service of use official on foot on the fire ongoing operating operational operative participial performing postpositional practicable practical practicing pragmatical prepositional pro professional pronominal proper psychiatric psychobiological psychodynamic psychogenic psychological psychoneurological psychopathic psychopathological psychophysical psychophysiological psychosexual psychosocial psychosomatic psychotic running serviceable serving structural substantive syntactic tagmemic technical transitive useful utilitarian verbal vocational working