Goodness vs My god

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

Goodness

Top 2,000 (common)B2noun

My god

InformalTop 2,000 (common)
Most formal: Goodness
 GoodnessMy god
Pronunciation🇬🇧 /["/ˈɡʊdnəs/"]/🇺🇸 /["/ˈɡʊdnəs/"]/🇬🇧 //maɪ ɡɒd//🇺🇸 //maɪ ɡɑd//
MeaningThe quality of being good or kind.An expression of surprise or disbelief.
ExampleThe goodness of her character was evident in the way she treated others.My god, I can't believe how quickly this year has gone by!
RegisterNeutralInformal
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2-
Part of speechnoun
Collocationsgoodness gracious, goodness me, the goodness of humanitymy god, look, my god, why, my god, what
Antonymswickedness, evil, badness-
Common mistakesConfused with 'goodness' vs 'goodness gracious'., Omitting the 'ness' when forming the word., Using it in a formal context where a more specific term would be appropriate.Used too seriously; it's often just an expression., Confused with 'Oh my God!', which is more emphatic., Not capitalizing 'God' can be seen as disrespectful in some contexts.
Usage notesUsed in both spoken and written English. Common in expressions of surprise or emphasis ('Oh goodness!'). Not typically used in formal writing.Used mainly in informal contexts to express strong feelings, sometimes can be considered blasphemous depending on the audience.

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Goodness
My god

Frequently asked questions: Goodness vs My god

What's the difference between Goodness and My god?

Goodness: The quality of being good or kind. My god: An expression of surprise or disbelief.

Which is more formal: Goodness and My god?

Goodness is the most formal of these.

Can you show an example of each?

Goodness: The goodness of her character was evident in the way she treated others. My god: My god, I can't believe how quickly this year has gone by!

Can I use Goodness and My god interchangeably?

Not always. Goodness and My god 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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