effects
n. countable A2 Elementary US //ˈifɛkts// UK //ɪfˈɛkts// ef·fects
n. the results or changes that happen because of a cause. You use this to talk about how one thing influences another.
n. the results or consequences produced by an action, cause, or agent. Often used in the plural to describe the overall impact of a phenomenon.
The medicine has some side effects.
Scientists are studying the long-term effects of rising sea levels on coastal cities.
The economic reforms had immediate effects on the local market, though the full social consequences did not become apparent for several decades.
Usage
Commonly used with the preposition 'on' to indicate the target of the influence.
Pitfall
The medicine had a good affectThe medicine had a good effectLearners often confuse the noun 'effect' with the verb 'affect'.