Not regularly vs Seldom

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

Not regularly

Top 5,000 (fairly common)

Seldom

Top 3,000 (common)C1adverb
Most common: Seldom
 Not regularlySeldom
Pronunciation🇬🇧 //nɒt ˈrɛɡjʊləli//🇺🇸 //nɑt ˈrɛɡjʊlɛrli//🇬🇧 /["/ˈseldəm/"]/🇺🇸 /["/ˈseldəm/"]/
MeaningNot happening often or at regular times.not often
ExampleI exercise not regularly, but when I do, I give it my all.She seldom goes to the gym because she prefers outdoor activities.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 3,000 (common)
CEFR level-C1
Part of speechadverb
Collocationsnot regularly scheduled, not regularly occurring, not regularly implementedseldom seen, seldom heard, seldom used, seldom acknowledged, seldom mentioned
Antonyms-often, frequently, regularly
Common mistakesUsing 'not regular' instead of 'not regularly'., Confusing with 'irregularly', which implies different patterns of occurrence., Using with countable nouns incorrectly, e.g., 'not regularly meals.'Confused with 'never' - 'seldom' means not often, not not at all., Using 'seldom' with positive verb constructions - it's usually used in negative or interrogative forms., Incorrectly placing 'seldom' at the end of a sentence; it should come before the main verb.
Usage notesUsed in both spoken and written contexts to indicate infrequency; suitable for formal and informal situations.Use 'seldom' in neutral contexts to indicate something happens infrequently. Avoid in very formal writing; 'rarely' may be preferred. Stay away from casual conversations.

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Not regularly
Seldom

Frequently asked questions: Not regularly vs Seldom

What's the difference between Not regularly and Seldom?

Not regularly: Not happening often or at regular times. Seldom: not often

Which is more common: Not regularly and Seldom?

Seldom is the most common in everyday English.

Can you show an example of each?

Not regularly: I exercise not regularly, but when I do, I give it my all. Seldom: She seldom goes to the gym because she prefers outdoor activities.

Can I use Not regularly and Seldom interchangeably?

Not always. Not regularly and Seldom 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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