virulence vs virulent, What's the Difference?

Which to use

“virulence” is a noun and “virulent” is an adjective - they look or sound alike but fill different roles in a sentence.

#47,408
“virulence” frequency rank: #33,904
“virulent” frequency rank: 81312
confusion score

Side-by-Side Comparison

Feature	virulence	virulent
Definition	The state of being virulent.	Of animals, plants, or substances: extremely venomous or poisonous.

Where the spellings diverge

Shared letters are muted; the letters that actually set virulence and virulent apart are highlighted. They share 7 letters in sequence, which is exactly why the eye skips the difference.

9 ch

virulence

8 ch

virulent

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: virulence is /ˈvɪɹjələns/ while virulent is /ˈvɪɹ(j)ʊl(ə)nt/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 81312, derived from the frequency rank of both members and their visual similarity.

virulence is recorded at frequency rank #47,408, classified as anoun, pronounced /ˈvɪɹjələns/. virulent is at rank #33,904, tagged as anadj, pronounced /ˈvɪɹ(j)ʊl(ə)nt/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 81312, this pair ranks #17,910 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of virulence vs virulent

Shared letters: eilnruv. Private to "virulence": c. Private to "virulent": t.

"virulence" · 9 letters · shape CVCVCVCCV · "virulent" · 8 letters · shape CVCVCVCC

Known mistypes of this pair

virulence ← ivrulence · virluence · virrulence · viruelnce · virulance · virulecne · virulencce · virulenec
virulent ← ivrulent · virluent · virrulent · viruelnt · virulennt · virulentt · viruletn · virullent

Frequency comparison

virulence#47,408

virulent#33,904

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "virulence" and "virulent" be used interchangeably?

No - they are not even the same part of speech. "virulence" is a noun and "virulent" an adjective, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "virulence" or "virulent"?

"virulent" is the more common of the two: it sits at frequency rank #33,904 in our English list, against #47,408 for "virulence". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering virulence vs virulent

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “virulence”; for an adjective, it's “virulent”.
See each word in full, definition, IPA, etymology and its other confusables. Full “virulence” entry
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