Corrupt vs Infect vs Spoil

When to use each in English, with meaning, register, and examples.

Corrupt

Top 1,000 (very common)C1adjective

Infect

Top 2,000 (common)C1verb

Spoil

Top 1,000 (very common)B2verb
 CorruptInfectSpoil
Pronunciation🇬🇧 /["/kəˈrʌpt/"]/🇺🇸 /["/kəˈrʌpt/"]/🇬🇧 /["/ɪnˈfekt/","/ɪnˈfekts/","/ɪnˈfektɪd/","/ɪnˈfektɪŋ/"]/🇺🇸 /["/ɪnˈfekt/","/ɪnˈfekts/","/ɪnˈfektɪd/","/ɪnˈfektɪŋ/"]/🇬🇧 /["/spɔɪl/","/spɔɪlz/","/spɔɪld/","/spɔɪlt/","/ˈspɔɪlɪŋ/"]/🇺🇸 /["/spɔɪl/","/spɔɪlz/","/spɔɪld/","/spɔɪlt/","/ˈspɔɪlɪŋ/"]/
Meaningto make something bad or to change it for the worseTo make someone sick by spreading germs or diseases.to make something bad or to ruin it
ExampleIt was seen as the only way to overthrow a corrupt regime.It is not possible to infect another person through kissing.If you leave the milk out too long, it will spoil and become unsafe to drink.
RegisterNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)Top 1,000 (very common)
CEFR levelC1C1B2
Part of speechadjectiveverbverb
Collocationsbe, become, hopelessly, thoroughly, totally, be, become, hopelessly, thoroughly, totallyinfect a wound, infect someone with a virus, infectious disease, infected by bacteria, infect the environmentcompletely, quite, rather, hate to, not be going to, not want to, with, be completely spoiled, be thoroughly spoiled, be utterly spoiled
Antonymshonest, pure, correctheal, cure, preventpreserve, maintain, cherish
Common mistakesConfused with 'correction' when talking about changes., Using 'corrupt' as a noun instead of an adjective or verb., Overusing 'corrupt' when 'taint' or 'spoil' might be more appropriate.Confused with 'affect' — 'infect' means to make sick, while 'affect' relates to influencing something., Using 'infect' with inanimate objects — only living things can be infected., Mixing up 'infect' with 'contaminate' — 'contaminate' often refers to pollution or toxins.Using 'spoil' with an incorrect preposition, like 'spoil for someone' instead of 'spoil something for someone'., Confusing 'spoil' with 'spolt'— 'spolt' is not a word., Misunderstanding the difference between 'spoil' and 'spoilage', which refers specifically to food.
Usage notesUse 'corrupt' when discussing moral decay, dishonest actions, or when something is damaged. It's usually inappropriate in casual conversations unless discussing politics or crime.Use 'infect' in medical or health contexts. It’s formal, so avoid it in casual conversations unless discussing illness. Common with diseases or viruses.Use 'spoil' when something is ruined or made worse. It can refer to food going bad or experiences being ruined. Avoid in very formal contexts.

See it in real clips

Corrupt
Spoil

Frequently asked questions: Corrupt vs Infect vs Spoil

What's the difference between Corrupt, Infect, and Spoil?

Corrupt: to make something bad or to change it for the worse Infect: To make someone sick by spreading germs or diseases. Spoil: to make something bad or to ruin it

Are Corrupt, Infect, and Spoil the same CEFR level?

Corrupt: C1, Infect: C1, Spoil: B2 on the CEFR scale.

What part of speech are Corrupt, Infect, and Spoil?

Corrupt: adjective, Infect: verb, Spoil: verb.

Can you show an example of each?

Corrupt: It was seen as the only way to overthrow a corrupt regime. Infect: It is not possible to infect another person through kissing. Spoil: If you leave the milk out too long, it will spoil and become unsafe to drink.

Can I use Corrupt, Infect, and Spoil interchangeably?

Not always. Corrupt, Infect, and Spoil are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.