soivssolidConfusable pair

Quick tell: soi is a noun, solid is an adjective, so they fill different roles in a sentence.

Which to use

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

#34,694
“soi” frequency rank
#1,919
“solid” frequency rank
36613
confusion score

Side-by-Side Comparison

Feature soi solid
Definition In Thailand, a side-street branching off a major street; an alley or lane. That can be picked up or held, having a texture, and usually firm. Unlike a liquid, gas or plasma.

Letter map: soi vs solid

Shared letters muted; letters that set soi and solid apart highlighted. Shared run: 3.

3 ch
soi
5 ch
solid

Part-of-speech tell for soi / solid

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: soi is anoun and solidanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 36613, derived from the frequency rank of both members and their visual similarity.

soi is recorded at frequency rank #34,694, classified as anoun. solid is at rank #1,919, tagged as anadj, pronounced /ˈsɒl.ɪd/.

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 36613, this pair ranks #301,708 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of soi vs solid

Shared letters: ios. Private to "soi": -. Private to "solid": dl.

"soi" · 3 letters · shape CVV  ·  "solid" · 5 letters · shape CVCVC

Known mistypes of this pair

  • solidoslid · sloid · soild · soldi · solidd · sollid · ssolid

Frequently Asked Questions

Is swapping "soi" for "solid" ever safe?
No - they are not even the same part of speech. "soi" is a noun and "solid" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "soi" or "solid" show up more?
"solid" is the more common of the two: it sits at frequency rank #1,919 in our English list, against #34,694 for "soi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "soi" vs "solid" is on the table, pick a follow-up below.

  • Full dictionary entry for "soi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "solid" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #301,708 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "soi" and "solid" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs soi". 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 #301,708 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