easy

as a duck takes to water basic easy as 123 easy as ABC easy as cake easy as pie easy as falling off a log easy as rolling off a log easy as toffee easy-breezy easy peasy easy peasy Japanesey easy peasy lemon squeezy effortless like a duck takes to water idiotproof like falling off a log like riding a bike like robbing a baby like shelling peas like shooting fish in a barrel like taking candy from a baby natural painless plain-sailing simple simple as kiss your hand simplex smooth straightforward troublefree unchallenging uncomplicated undemanding undifficult yezzy

uneasy anxious difficult hard uneath challenging complex esoteric tough tricky