ICO

noun

"ico" is a 3-letter English headword indexed on PlainSpell.

The verdict

“ICO” sits in 20 confusable pairs (corpus #23,564) as a noun. The look-alike neighbours are the real trap.

#23,564
frequency rank, English
2,140
“I” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of initial coin offering.

Corpus desk

Index EN-ico · ICO · English

ICO · rank #23,564 · 0 variants · 20 confusables

  • FREQ-MID #23,564
  • LEN-MID 3 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH horseshoe

Nearest frequency peer: horseshoe (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Frequency neighbours of confusable “ICO”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “ICO” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

ICO vs in
0% similar
ICO vs is
0% similar
ICO vs it
0% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for ICO
PropertyValue
HeadwordICO
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#23,564
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “ICO”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).ICOlands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “horseshoe” (#23,563), “Imran” (#23,565), “incision” (#23,566). Among 2,140 “I” headwords, “ICO” is #23,564. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for ICO is neighbouring look-alikes ("in", "is", …), not just typos; it is anoun. Frequency #23,564 among 2,140 “I” headwords. Gloss: "Initialism of initial coin offering.".

The misspelling generator found no plausible variants for ICO, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "in", "is", "it", and more, where similar look or sound leads writers to substitute one word for another in context.

No explicit etymology string is stored for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is ICO, spelled I-C-O.

Definition

  1. 1
    Initialism of initial coin offering.

Recorded use

Wiktionary examples

These source excerpts show how ICO appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. We have finished the coin website and are ready to launch the ICO offering. We are currently in the Phase 1 portion of the offering which is by far the best. We need your help in building a great community and we want to say Thank you with our ICO Phase one offering.
  2. The hype around blockchain technology is turning ICOs into the next digital gold rush: According to the research firm Smith and Crown, ICOs raised $27.6 million in the first two weeks of May alone.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "ICO"?
"ICO" is spelled I-C-O.
What does "ICO" mean?
As a noun, "ICO" means: Initialism of initial coin offering.
What words are commonly confused with "ICO"?
"ICO" is commonly confused with "in", "is", "it". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "ICO" come from?
"ICO" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "ICO", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list