Synonyms to easy-running

frictionless, accordant, agreeable, agreeing, akin, amicable, at one, attuned, compatible, concordant, congenial, corresponding, easy-flowing, empathetic, empathic, en rapport, harmonious, in accord, in concert, in rapport, in tune, inharmony, like-minded, of one mind, peaceful, smooth-running, sympathetic, together, understanding, united, well-oiled