Which to use
“incest” is a noun and “infect” is a verb - they look or sound alike but fill different roles in a sentence.
- #18,108
- “incest” frequency rank
- #18,109
- “infect” frequency rank
- 36217
- confusion score
Side-by-Side Comparison
| Feature | incest | infect |
|---|---|---|
| Definition | Sexual relations between close relatives, especially immediate family members and sometimes first cousins, usually considered taboo. | To bring (the body or part of it) into contact with a substance that causes illness (a pathogen), so that the pathogen begins to act on the body; (of a pathogen) to come into contact with (a body or body part) and begin to act on it. |
Where the spellings diverge
Shared letters are muted; the letters that actually set incest and infect apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: incest is /ˈɪn.sɛst/ while infect is /ɪnˈfɛkt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 36217, derived from the frequency rank of both members and their visual similarity.
incest is recorded at frequency rank #18,108, classified as anoun, pronounced /ˈɪn.sɛst/. infect is at rank #18,109, tagged as averb, pronounced /ɪnˈfɛkt/.
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 36217, this pair ranks #305,113 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of incest vs infect
Shared letters: ceint. Private to "incest": s. Private to "infect": f.
"incest" · 6 letters · shape VCCVCC · "infect" · 6 letters · shape VCCVCC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "incest" and "infect" be used interchangeably?
Which is more common, "incest" or "infect"?
Remembering incest vs infect
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “incest”; for a verb, it's “infect”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “incest” entry
- Browse more pairs most likely to be confused. Most confusable