phentermine
"phentermine" is a 11-letter English headword indexed on PlainSpell.
The verdict
“phentermine” is uncommon English (frequency #95,265 among 4,417 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #95,265
- frequency rank, English
- 4,417
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An appetite suppressant of the amphetamine and phenethylamine classes.
Corpus desk
Index EN-phentermine · phentermine · English
phentermine · rank #95,265 · 0 variants · 0 confusables
- FREQ-RARE #95,265
- LEN-MEGA 11 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,417
- PHOTO-FINISH Petrenko
Nearest frequency peer: Petrenko (-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 “phentermine”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- persecutor
persecutor
4,740 corpus weight
- perspire
perspire
4,738 corpus weight
- Petrenko
Petrenko
4,737 corpus weight
- phentermine
phentermine
4,736 corpus weight
- phospholipa…
phospholipase
4,734 corpus weight
- picador
picador
4,733 corpus weight
What this shows Bars show where “phentermine” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | phentermine |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #95,265 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “phentermine” sits in English frequency
Rare enough to double-check
phentermine is uncommon English at frequency #95,265 among 4,417 “P” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An appetite suppressant of the amphetamine and phenethylamine classes.".
Zero misspellings are on record for phentermine in our index, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: Contraction of phenyl-tertiary-butylamine. The correct English form is phentermine, spelled P-H-E-N-T-E-R-M-I-N-E.
Definition
- 1An appetite suppressant of the amphetamine and phenethylamine classes.
Recorded use
Wiktionary exampleThese source excerpts show how phentermine appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
I took the phentermine pills and started quietly obsessing about losing weight again.
Etymology
Contraction of phenyl-tertiary-butylamine.
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 September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "phentermine"?
What does "phentermine" mean?
What is the origin of the word "phentermine"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "phentermine", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 11 letters (nearest by frequency rank).
What to do next
You've looked up "phentermine". Here's where to go from here.
- Usage frequency rank #95,265 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "P" letter cohort. P–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.