adverse

causing harm or damage; harmful

perjudicial, dañino, adverso

• adverse effects
• adverse reaction

Collocations adverse effect on health · adverse weather conditions

• The drug had adverse side-effects.

  El medicamento tuvo efectos secundarios perjudiciales.

opposing or opposing something; contrary to what is wanted or expected

contrario, adverso, hostil

• adverse opinion
• adverse criticism

Collocations adverse public reaction · adverse comments on the proposal

• The company received adverse publicity.

  La empresa recibió una mala prensa.