Ongoing vs Persistent

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

Ongoing

Top 2,000 (common)B2adjective

Persistent

Top 2,000 (common)C1adjective
 OngoingPersistent
Pronunciation🇬🇧 /["/ˈɒnɡəʊɪŋ/"]/🇺🇸 /["/ˈɑːnɡəʊɪŋ/"]/🇬🇧 /["/pəˈsɪstənt/"]/🇺🇸 /["/pərˈsɪstənt/"]/
Meaningstill happening; continuing.Continuing to do something despite difficulties.
Examplean ongoing debate/discussion/processShe showed persistent effort in completing the project despite numerous obstacles.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2C1
Part of speechadjectiveadjective
Collocationsongoing project, ongoing discussion, ongoing debate, ongoing research, ongoing processbe, extremely, incredibly, really, be, extremely, incredibly, really
Antonymscompleted, finished, terminatedtemporary, yielding, intermittent
Common mistakesConfusing 'ongoing' with 'on-going'., Using 'ongoing' in place of 'completed' or 'finished'.Confusing with 'consistant' which means something different., Using 'persistent' in a positive context only; it can also refer to annoying behavior., Mispronouncing the word, especially the 's' sound.
Usage notesUse 'ongoing' to describe events or situations that are currently in progress. It’s usually appropriate in both written and spoken contexts, but can be less formal than legal or academic settings.Use 'persistent' in texts where determination or refusing to give up is highlighted. It's more appropriate in formal or neutral contexts, while not commonly used in casual conversation.

Frequently asked questions: Ongoing vs Persistent

What's the difference between Ongoing and Persistent?

Ongoing: still happening; continuing. Persistent: Continuing to do something despite difficulties.

Are Ongoing and Persistent the same CEFR level?

Ongoing: B2, Persistent: C1 on the CEFR scale.

Can I use Ongoing and Persistent interchangeably?

Not always. Ongoing and Persistent 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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