Irregular vs Jagged

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

Irregular

Top 2,000 (common)

Jagged

Top 3,000 (common)B1adjective
Most common: Irregular
 IrregularJagged
Pronunciation🇬🇧 //ɪˈrɛɡjʊlə//🇺🇸 //ɪˈrɛɡjələr//🇬🇧 //ˈdʒæɡ.ɪd//🇺🇸 //ˈdʒæɡ.ɪd//
MeaningNot following the usual pattern or rules.having sharp, uneven edges or points
ExampleHis irregular attendance in class raised concerns.The jagged cliffs rose dramatically from the sea.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 3,000 (common)
CEFR level-B1
Part of speechadjective
Collocationsirregular verbs, irregular pattern, irregular shapes, irregular heartbeat, irregular schedulejagged edge, jagged rocks, jagged line
Antonymsregular, consistent, uniformsmooth, even, flat
Common mistakesConfusing 'irregular' with 'irregularity' which is a noun., Using 'irregular' to describe consistent things incorrectly., Confusing it with 'regular' without understanding the context.Confused with 'jaggar', a non-standard term., Used to describe smooth objects., Mispronounced, especially the 'jag' part.
Usage notesUse 'irregular' to describe things that deviate from expected patterns, such as verbs or shapes. Avoid in very formal writing.Used to describe shapes or edges that are not smooth. Appropriate in both written and spoken contexts.

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Irregular

Frequently asked questions: Irregular vs Jagged

What's the difference between Irregular and Jagged?

Irregular: Not following the usual pattern or rules. Jagged: having sharp, uneven edges or points

Which is more common: Irregular and Jagged?

Irregular is the most common in everyday English.

Can you show an example of each?

Irregular: His irregular attendance in class raised concerns. Jagged: The jagged cliffs rose dramatically from the sea.

Can I use Irregular and Jagged interchangeably?

Not always. Irregular and Jagged 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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