Mucked vs Spoil

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

Mucked

InformalBeyond 10,000 (less common)

Spoil

Top 1,000 (very common)B2verb
Most formal: SpoilMost common: Spoil
 MuckedSpoil
Pronunciation🇬🇧 //mʌkt//🇺🇸 //mʌkt//🇬🇧 /["/spɔɪl/","/spɔɪlz/","/spɔɪld/","/spɔɪlt/","/ˈspɔɪlɪŋ/"]/🇺🇸 /["/spɔɪl/","/spɔɪlz/","/spɔɪld/","/spɔɪlt/","/ˈspɔɪlɪŋ/"]/
MeaningMade something dirty or confused.to make something bad or to ruin it
ExampleI really mucked up the project presentation.If you leave the milk out too long, it will spoil and become unsafe to drink.
RegisterInformalNeutral
How commonBeyond 10,000 (less common)Top 1,000 (very common)
CEFR level-B2
Part of speechverb
Collocationsmuck up, muck about, totally mucked, mucked around, mucked the placecompletely, quite, rather, hate to, not be going to, not want to, with, be completely spoiled, be thoroughly spoiled, be utterly spoiled
Antonymscleaned, organized, tidiedpreserve, maintain, cherish
Common mistakesConfused with 'muck up' (used as a phrasal verb), Overusing in contexts where formal language is expected, Using 'mucked' alone without an objectUsing '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 notesUsed in casual conversation. Avoid in formal writing. Often used to describe a situation that has gone wrong.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

Mucked
Spoil

Frequently asked questions: Mucked vs Spoil

What's the difference between Mucked and Spoil?

Mucked: Made something dirty or confused. Spoil: to make something bad or to ruin it

Which is more formal: Mucked and Spoil?

Spoil is the most formal of these.

Which is more common: Mucked and Spoil?

Spoil is the most common in everyday English.

Can you show an example of each?

Mucked: I really mucked up the project presentation. Spoil: If you leave the milk out too long, it will spoil and become unsafe to drink.

Can I use Mucked and Spoil interchangeably?

Not always. Mucked 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.

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