operate

to function well without wasting time, energy or money

to function in a way that produces the intended result

to run a business or system with success

to function in the usual or expected way

to function in the correct way

to function without any problems or difficulties

to be functioning or in business at the present time

to function separately from others

to function in a way that can be trusted

to function in a different manner

to run a business in a way that makes a profit

to function by being operated by a person

to run as a for-profit business

to function without stopping

by remote control

to function using electronic components

to function on its own, without external control

to function using electricity

to function using the pressure of a liquid

not difficult to use or control

created with the specific purpose of functioning in a certain way

having the capacity or means to function

to keep functioning or running

having permission to function or run a business

to function in the role of something

to function inside the boundaries of a system or framework

to function within the limits or conditions of something

to function following a set of rules or principles