radiotherapy
"radiotherapy" is a 12-letter English headword indexed on PlainSpell.
The verdict
“radiotherapy” has 18 generated spelling variants in the English index at frequency #26,219. The variants make it a useful spelling check.
- #26,219
- frequency rank, English
- 21,470
- “R” headwords
- 18
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Synonym of radiation therapy.
| Property | Value |
|---|---|
| Headword | radiotherapy |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Frequency rank | #26,219 |
| Misspellings tracked | 18 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “radiotherapy” sits in English frequency
A misspelling magnet
The generator records 18 spelling variants around radiotherapy, anoun. Corpus frequency is #26,219 among 21,470 “R” headwords. Dominant gloss: "Synonym of radiation therapy.".
Our generated misspelling index lists 18 likely wrong-spelling variants for radiotherapy, with forms such as "ardiotherapy", "raddiotherapy", and "radiohterapy". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From radio- + therapy. The correct English form is radiotherapy, spelled R-A-D-I-O-T-H-E-R-A-P-Y.
Definition
- 1Synonym of radiation therapy.
Etymology
From radio- + therapy.
This word in other languages
Common misspellings
Also misspelled as:
- ardiotherapy
- raddiotherapy
- radiohterapy
- radiotehrapy
- radiothearpy
- radiotherappy
- radiotherapyy
- radiotherayp
- radiotherpay
- radiotherrapy
- radiothherapy
- radiothreapy
- radiottherapy
- raditoherapy
- radoitherapy
- raidotherapy
- rdaiotherapy
- rradiotherapy
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of radiotherapy - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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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Using “radiotherapy”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is R-A-D-I-O-T-H-E-R-A-P-Y - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Same frequency band
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.