aidesvsAIDSWhich spelling fits?

Which to use

“aides” and “AIDS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#16,840
“aides” frequency rank
#4,649
“AIDS” frequency rank
21489
confusion score

Side-by-Side Comparison

Feature aides AIDS
Definition plural of aide Acronym of acquired immune deficiency syndrome.

Same sound, different letters: aides vs AIDS

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 4 letters.

5 ch
aides
4 ch
AIDS

Same sound, different spelling - aides / AIDS

This is the hard kind. aides and AIDS are pronounced identically (/eɪdz/) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 letter(s) in length. Our composite confusion score for this pair is 21489, derived from the frequency rank of both members and their visual similarity.

aides is recorded at frequency rank #16,840, classified as anoun, pronounced /eɪdz/. AIDS is at rank #4,649, tagged as anoun, pronounced /eɪdz/.

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 21489, this pair ranks #423,544 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aides vs AIDS

Shared letters: adis. Private to "aides": e. Private to "AIDS": -.

"aides" · 5 letters · shape VVCVC  ·  "AIDS" · 4 letters · shape VVCC

Known mistypes of this pair

  • aidesadies · aiddes · aidess · aidse · aieds · iades
  • AIDSadis · aidds · aidss · aisd · iads

Frequently Asked Questions

Is swapping "aides" for "AIDS" ever safe?
No. They are pronounced the same (/eɪdz/), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
In ordinary English text, does "aides" or "AIDS" show up more?
"AIDS" is the more common of the two: it sits at frequency rank #4,649 in our English list, against #16,840 for "aides". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've separated the homophone pair "aides" / "AIDS". Follow the links when you need the full entry or a neighbour that trips the same ear.

  • Full dictionary entry for "aides" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "AIDS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #423,544 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "aides" and "AIDS" also get mixed up with nearby pairs, the highest-scored neighbour is "abides vs aides". 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 #423,544 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list