idovsiloWhat's the difference?

Quick tell: ido is a adjective, ilo is a noun, so they fill different roles in a sentence.

Which to use

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

#1,216
“ido” frequency rank
#43,641
“ilo” frequency rank
44857
confusion score

Side-by-Side Comparison

Feature ido ilo
Definition Loco, falto de cordura. Herramienta

Where the eye mixes ido and ilo

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. ido and ilo follow the identical consonant-vowel pattern (VCV). Same shape at a glance is often the real trap, independent of shared letters.

3 ch
ido
3 ch
ilo

Why the eye confuses ido with ilo

These two trip readers on the page rather than in the ear: ido is [ˈið̞o] while ilo is /ˈilo/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - d in “ido” becomes l in “ilo”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 44857, derived from the frequency rank of both members and their visual similarity.

ido is recorded at frequency rank #1,216, classified as anadj, pronounced [ˈið̞o]. ilo is at rank #43,641, tagged as anoun, pronounced /ˈilo/.

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 44857, this pair ranks #134,734 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ido vs ilo

Shared letters: io. Private to "ido": d. Private to "ilo": l.

"ido" · 3 letters · shape VCV  ·  "ilo" · 3 letters · shape VCV

Frequently Asked Questions

Can "ido" and "ilo" be used interchangeably?
No - they are not even the same part of speech. "ido" is an adjective and "ilo" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ido" vs "ilo" - which ranks higher?
"ido" is the more common of the two: it sits at frequency rank #1,216 in our Spanish list, against #43,641 for "ilo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ilo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #134,734 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ido" and "ilo" also get mixed up with nearby pairs, the highest-scored neighbour is "ilo vs iza". Nearby pair

Confusion rank #134,734 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list