Fluke vs Lucky guess

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

Fluke

Top 5,000 (fairly common)

Lucky guess

Top 5,000 (fairly common)
 FlukeLucky guess
Pronunciation🇬🇧 //fluːk//🇺🇸 //fluːk//🇬🇧 //ˈlʌki ɡɛs//🇺🇸 //ˈlʌki ɡɛs//
MeaningA lucky chance or accident.A chance to be right about something without knowing for sure.
ExampleWinning the lottery was just a complete fluke.He called her the right name by a lucky guess.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 5,000 (fairly common)
Collocationslucky fluke, total fluke, fluke eventtake a lucky guess, make a lucky guess, have a lucky guess
Common mistakesConfusing with 'flukes' in anatomy., Using as a verb instead of a noun., Mixing up with 'lucky' or 'chance' in contexts.Using 'lucky guess' in overly formal situations., Confusing 'lucky guess' with 'educated guess' which implies knowledge., Not using it in contexts where outcomes are uncertain.
Usage notesOften used informally to describe unexpected good fortune. Not suitable for formal writing.Use 'lucky guess' in informal conversations when you want to express that the outcome was unexpected or achieved without much effort.

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Fluke
Lucky guess

Frequently asked questions: Fluke vs Lucky guess

What's the difference between Fluke and Lucky guess?

Fluke: A lucky chance or accident. Lucky guess: A chance to be right about something without knowing for sure.

Can you show an example of each?

Fluke: Winning the lottery was just a complete fluke. Lucky guess: He called her the right name by a lucky guess.

Can I use Fluke and Lucky guess interchangeably?

Not always. Fluke and Lucky guess 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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