ido vs ilo, What's the Difference?

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 spellings diverge

Shared letters are muted; the letters that actually set ido and ilo apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

ido

3 ch

ilo

Spelling & Dictionary Insight

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

Frequency comparison

ido#1,216

ilo#43,641

Source: FrequencyWords open word-frequency list

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.

Which is more common, "ido" or "ilo"?

"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.

Remembering ido vs ilo

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “ido”; for a noun, it's “ilo”.
See each word in full, definition, IPA, etymology and its other confusables. Full “ido” entry
Browse more pairs most likely to be confused. Most confusable