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side-by-side
side chain
side chair
side deal
side dish
side-dress
side-dressing
side drum
side effect
side-glance
side-impact
side issue
side meat
side mirror
side order
side plate
side pull
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side effect
side ef·fect (plural side ef·fects)


noun 
Definition:
 
1. secondary medical effect: an undesirable secondary effect of a drug or other form of medical treatment
2. secondary effect: a usually undesirable secondary effect produced by something
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