side-effect

n (often pl 常作复数) secondary, usu unpleasant or unwanted, effect of a drug, etc （药物等的）副作用.

sick-bay, sick-bed, sick-leave, sick-pay, sick-room, sicken, sickening, sickeningly, sickle, sickle cell, sickly, sickness, sickness benefit, side, side by side, side order, side walk, side-car, side-dish, side-drum, side-issue, side-on, side-road, side-saddle, side-show, side-slip, side-splitting, side-step, side-street, side-stroke, side-swipe, side-track, side-view, side-whiskers, side-winder, sideboard, sidekick, sidelight, sideline, sidelong,