adjective

requiring no physical or mental exertion.

I went up the steps in two effortless bounds

easy,uncomplicated,not difficult,undemanding,unexacting,unchallenging,painless,trouble-free,facile,simple,straightforward,elementary,idiot-proof,plain sailing,easy-peasy,easy as pie,as easy as falling off a log,as easy as ABC,a piece of cake,child’s play,kids’ stuff,a cinch,no sweat,a doddle,a breeze,a pushover,money for old rope,money for jam,duck soup,a snap,easy-breezy,a bludge,a piece of old tackle,a snip,a piece of piss