Foul-up vs Slip

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

Foul-up

InformalBeyond 10,000 (less common)

Slip

Top 1,000 (very common)B2verb
Most formal: SlipMost common: Slip
 Foul-upSlip
Pronunciation🇬🇧 //ˈfaʊlʌp//🇺🇸 //ˈfaʊlˌʌp//🇬🇧 /["/slɪp/","/slɪps/","/slɪpt/","/ˈslɪpɪŋ/"]/🇺🇸 /["/slɪp/","/slɪps/","/slɪpt/","/ˈslɪpɪŋ/"]/
MeaningTo make a mistake or cause a problem.to slide or fall unintentionally
ExampleHe really had a foul-up during the meeting when he forgot the main points.Be careful not to slip on the wet floor.
RegisterInformalNeutral
How commonBeyond 10,000 (less common)Top 1,000 (very common)
CEFR level-B2
Part of speechverb
Collocationsmajor foul-up, foul-up a plan, avoid a foul-up, foul-up in communication, classic foul-upslip on ice, slip through the cracks, slip of the tongue, slip into a conversation, slip someone's mind
Antonymssuccess, achievementgrip, hold, steady
Common mistakesConfused with 'foul' as in 'bad' or 'offensive'., Using 'foul-up' in a serious context instead of a light, informal one., Not recognizing 'foul-up' as a verb phrase.Confused with 'sneak' — they have different meanings., Using 'slip' as a transitive verb incorrectly., Mixing up 'slip' with 'trip' — they refer to different actions.
Usage notesUse 'foul-up' informally, often in casual conversation or writing. Avoid in formal contexts or professional settings.Use 'slip' when referring to losing your grip or control, often in physical contexts. It's suitable in both casual and formal situations, but avoid using it in overly serious contexts unless it’s metaphorical.

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Foul-up
Slip

Frequently asked questions: Foul-up vs Slip

What's the difference between Foul-up and Slip?

Foul-up: To make a mistake or cause a problem. Slip: to slide or fall unintentionally

Which is more formal: Foul-up and Slip?

Slip is the most formal of these.

Which is more common: Foul-up and Slip?

Slip is the most common in everyday English.

Can you show an example of each?

Foul-up: He really had a foul-up during the meeting when he forgot the main points. Slip: Be careful not to slip on the wet floor.

Can I use Foul-up and Slip interchangeably?

Not always. Foul-up and Slip 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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