rationalisation
"rationalisation" is a 15-letter English headword indexed on PlainSpell.
The verdict
“rationalisation” is uncommon English (frequency #61,056 among 3,094 “R” headwords), classed as a noun. The kind of spelling people second-guess.
- #61,056
- frequency rank, English
- 3,094
- “R” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Non-Oxford British English standard spelling of rationalization.
Corpus desk
Index EN-rationalisation · rationalisation · English
rationalisation · rank #61,056 · 0 variants · 0 confusables
- FREQ-RARE #61,056
- LEN-MEGA 15 letters
- VOW-8 8 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,094
- PHOTO-FINISH Raiden
Nearest frequency peer: Raiden (-2 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.
Long-tail ranks near “rationalisation”
Sparse band: bars invert rank so rarer forms read shorter
- publicise
publicise
38,954 corpus weight
- rabe
rabe
38,949 corpus weight
- Raiden
Raiden
38,947 corpus weight
- rationalisa…
rationalisation
38,945 corpus weight
- refracted
refracted
38,940 corpus weight
- reggaeton
reggaeton
38,939 corpus weight
What this shows Long-tail view: where “rationalisation” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | rationalisation |
| Language | English |
| Part of speech | Noun |
| Letters | 15 |
| Frequency rank | #61,056 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “rationalisation” in English
Rare enough to double-check
rationalisation is uncommon English at frequency #61,056 among 3,094 “R” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Non-Oxford British English standard spelling of rationalization.".
The misspelling generator found no plausible variants for rationalisation, a sign its spelling follows regular English conventions. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: Borrowed from French rationalisation, equivalent to rational + -isation or rationalise + -ation. The correct English form is rationalisation, spelled R-A-T-I-O-N-A-L-I-S-A-T-I-O-N.
Definition
- 1Non-Oxford British English standard spelling of rationalization.
Recorded use
Wiktionary examplesThese source excerpts show how rationalisation appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The conscious mind refuses to admit any failure to perceive, and puts in its place a series of rationalisations which are fabrications and distortions of the real nature of things.
My trip along the rest of the line is delightful. It's yet another route that has recovered from previous rationalisation by having tracks and platforms reinstated in recent years.
Etymology
Borrowed from French rationalisation, equivalent to rational + -isation or rationalise + -ation.
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 "rationalisation", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 15 letters (nearest by frequency rank).