plain sailing Antonyms

difficult progression devil of a job burdensome task arduous task backbreaking work blood sweat and tears like herding cats like getting blood out of a stone no picnic brain surgery dodgy annoying job arduous job difficult progress difficult advancement challenging issue challenging assignment burdensome work burdensome job beast of a job back-breaking job challenging job arduous work backbreaking vexed troublesome controversial complicated complex challenging challenge baffling awkward augean arduous abstruse difficult hard tricky ticklish thorny taxing sticky problematical prickly knotty involved intricate abstract