ISP
"isp" is a 3-letter English headword indexed on PlainSpell.
The verdict
“ISP” sits in 20 confusable pairs (corpus #20,971) as a noun. The look-alike neighbours are the real trap.
- #20,971
- frequency rank, English
- 2,140
- “I” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of interstellar polarization.
Corpus desk
Index EN-isp · ISP · English
ISP · rank #20,971 · 0 variants · 20 confusables
- FREQ-MID #20,971
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 2,140
- PHOTO-FINISH intolerant
Nearest frequency peer: intolerant (-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 “ISP”
Peers at similar corpus weight, separate from look-alike pairs below
- instinctive…
instinctively
79,033 corpus weight
- interconnec…
interconnected
79,032 corpus weight
- intolerant
intolerant
79,031 corpus weight
- ISP
ISP
79,030 corpus weight
- jellyfish
jellyfish
79,029 corpus weight
- Jimi
Jimi
79,028 corpus weight
What this shows Bars place “ISP” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | ISP |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #20,971 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “ISP”
Easy to mix with look-alikes
The spelling risk for ISP is neighbouring look-alikes ("it", "IV", …), not just typos; it is anoun. Frequency #20,971 among 2,140 “I” headwords. 4 recorded senses keep meaning in play.
The misspelling generator found no plausible variants for ISP, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "it", "IV", "iz", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
No borrowing history is documented for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is ISP, spelled I-S-P.
Definition
- 1Initialism of interstellar polarization.
- 2Initialism of Internet service provider (a company that provides Internet access for a fee)
- 3Initialism of interface segregation principle, one of the five SOLID principles of programming.
- 4Iₛₚ, the specific impulse of a rocket engine
Recorded use
Wiktionary examplesThese source excerpts show how ISP appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Upon my glorious ISP homepage is a wonderful piece of wisdumb […]
Virgin Media, one of the UK's largest ISPs, has agreed to forward British music industry nastygrams to subscribers suspected of illegal file-swapping.
This word in other languages
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "ISP", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).