methicillin
/ˌmɛθ.ɪˈsɪl.ɪn/
"methicillin" is a 11-letter English headword indexed on PlainSpell.
The verdict
“methicillin” is uncommon English (frequency #77,925 among 36,575 “M” headwords), classed as a noun. The kind of spelling people second-guess.
- #77,925
- frequency rank, English
- 36,575
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Alternative spelling of meticillin.
Corpus desk
Index EN-methicillin · methicillin · English
methicillin · rank #77,925 · 0 variants · 0 confusables
- FREQ-RARE #77,925
- LEN-MEGA 11 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 36,575
- PHOTO-FINISH microcephaly
Nearest frequency peer: microcephaly (+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 neighbourhood for “methicillin”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- messiness
messiness
22,078 corpus weight
- methicillin
methicillin
22,076 corpus weight
- microcephaly
microcephaly
22,075 corpus weight
- microsecond
microsecond
22,074 corpus weight
- misrule
misrule
22,072 corpus weight
- MMG
MMG
22,071 corpus weight
What this shows Bars show where “methicillin” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | methicillin |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌmɛθ.ɪˈsɪl.ɪn/ |
| Letters | 11 |
| Frequency rank | #77,925 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “methicillin” sits in English frequency
Rare enough to double-check
methicillin is uncommon English at frequency #77,925 among 36,575 “M” headwords, classed as anoun, transcribed /ˌmɛθ.ɪˈsɪl.ɪn/. Rarity is why readers land here mid-draft. Gloss: "Alternative spelling of meticillin.".
Our edit-distance generator produced no likely misspellings for methicillin, a sign its spelling follows regular English conventions. Our dataset records no confusable match here, since no other headword is close enough in sound or shape to pair with it.
This entry carries no recorded etymology, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is methicillin, spelled M-E-T-H-I-C-I-L-L-I-N.
Definition
- 1Alternative spelling of meticillin.
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "methicillin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 11 letters (nearest by frequency rank).
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.