negative effects

Unwanted side outcomes

Negative effects are harmful or undesirable outcomes resulting from an action, substance, or condition.

The phrase appears constantly in discussions of drugs, policies, technologies, and environmental changes: the negative effects of social media on mental health, negative effects of the medication included drowsiness and nausea.

Often interchangeable with side effects, adverse effects, or downsides, though negative effects is the broadest and least technical.

Related

repercussions · fallout · backlash · toxicity · health risks · adverse · detrimental · collateral damage · downside · aftermath · toll · impact · blowback · cost · risk · warning · symptoms · deterioration

Opposites
outcome valence

negative effectsbenefits

Gains or helpful effects

advantages · upsides · positive results · blessings · boons

impact direction

negative effectsimprovements

Changes that upgrade quality

enhancements · ameliorations · betterments · growth · progress

Family

negative, negatively, negativity, negate, negation, negating, negated, effect, effects

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G