Which to use
“decades” is a noun and “decides” is a verb - they look or sound alike but fill different roles in a sentence.
- #2,572
- “decades” frequency rank
- #5,490
- “decides” frequency rank
- 8062
- confusion score
Side-by-Side Comparison
| Feature | decades | decides |
|---|---|---|
| Definition | plural of decade. | third-person singular simple present indicative of decide |
Where the eye mixes decades and decides
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Visual trap between decades and decides
These two trip readers on the page rather than in the ear: decades is /ˈdɛkeɪdz/ while decides is /dɪˈsaɪdz/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “decades” becomes i in “decides”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 8062, derived from the frequency rank of both members and their visual similarity.
decades is recorded at frequency rank #2,572, classified as anoun, pronounced /ˈdɛkeɪdz/. decides is at rank #5,490, tagged as averb, pronounced /dɪˈsaɪdz/.
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 8062, this pair ranks #504,290 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of decades vs decides
Shared letters: cdes. Private to "decades": a. Private to "decides": i.
"decades" · 7 letters · shape CVCVCVC · "decides" · 7 letters · shape CVCVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "decades" and "decides" be used interchangeably?
Which is more common, "decades" or "decides"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "decades" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "decides" - compare definitions side by side with the headword page. Word entry
- This pair ranks #504,290 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "decades" and "decides" also get mixed up with nearby pairs, the highest-scored neighbour is "decibel vs decides". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #504,290 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.