Which to use
“ides” is a noun and “Isis” is a name - they look or sound alike but fill different roles in a sentence.
- #44,856
- “ides” frequency rank
- #4,536
- “Isis” frequency rank
- 49392
- confusion score
Side-by-Side Comparison
| Feature | ides | Isis |
|---|---|---|
| Definition | The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months. | An ancient Egyptian goddess, the wife of Osiris and mother of Horus, worshiped as the ideal mother and wife and as the matron of nature and magic; also worshiped by (some) Greeks during the Hellenistic period and featured in Greek mythology, and by Romans involved in what was categorized as the Cult of Isis. |
Where the spellings diverge
Shared letters are muted; the letters that actually set ides and Isis apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
ides and Isis form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They share most of their letters but differ in 2 positions - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 49392, derived from the frequency rank of both members and their visual similarity.
ides is recorded at frequency rank #44,856, classified as anoun, pronounced /aɪdz/. Isis is at rank #4,536, tagged as aname, pronounced /ˈaɪ.sɪs/.
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 49392, this pair ranks #184,066 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "ides" and "Isis" be used interchangeably?
Remembering ides vs Isis
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “ides”; for a name, it's “Isis”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “ides” entry
- Browse more pairs most likely to be confused. Most confusable