TCP
"tcp" is a 3-letter English headword indexed on PlainSpell.
The verdict
“TCP” sits in 20 confusable pairs (corpus #24,928) as an adjective. The look-alike neighbours are the real trap.
- #24,928
- frequency rank, English
- 3,151
- “T” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of to complete party (followed by total number in group. Code used in OSI to advise an airline that other passengers are travelling with a person but are booked separately)
Corpus desk
Index EN-tcp · TCP · English
TCP · rank #24,928 · 0 variants · 20 confusables
- FREQ-MID #24,928
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH tarot
Nearest frequency peer: tarot (-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 “TCP”
Peers at similar corpus weight, separate from look-alike pairs below
- stumps
stumps
75,078 corpus weight
- surcharge
surcharge
75,075 corpus weight
- tarot
tarot
75,074 corpus weight
- TCP
TCP
75,073 corpus weight
- throbbing
throbbing
75,071 corpus weight
- tilting
tilting
75,070 corpus weight
What this shows Bars place “TCP” 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 | TCP |
| Language | English |
| Part of speech | Adjective |
| Letters | 3 |
| Frequency rank | #24,928 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “TCP”
Easy to mix with look-alikes
The spelling risk for TCP is neighbouring look-alikes ("to", "TV", …), not just typos; it is anadjective. Frequency #24,928 among 3,151 “T” headwords. 2 recorded senses keep meaning in play.
TCP doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "to", "TV", "te", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Our source data has no etymology on file for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is TCP, spelled T-C-P.
Definition
- 1Initialism of to complete party (followed by total number in group. Code used in OSI to advise an airline that other passengers are travelling with a person but are booked separately)
- 2Initialism of thienyl cyclohexylpiperidine: tenocyclidine, a disassociative anesthetic drug with hallucinogenic properties. (Compare PCP.)
Recorded use
Wiktionary exampleThese source excerpts show how TCP appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
5 percent of street THC samples are combinations of TCP and PCC.
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 "TCP", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).