epinephrine
/ˌɛp.ɪˈnɛ.fɹɪn/
"epinephrine" is a 11-letter English headword indexed on PlainSpell.
The verdict
“epinephrine” has 16 generated spelling variants in the English index at frequency #41,110. The variants make it a useful spelling check.
- #41,110
- frequency rank, English
- 18,836
- “E” headwords
- 16
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized...
| Property | Value |
|---|---|
| Headword | epinephrine |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌɛp.ɪˈnɛ.fɹɪn/ |
| Letters | 11 |
| Frequency rank | #41,110 |
| Misspellings tracked | 16 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “epinephrine” sits in English frequency
A misspelling magnet
The generator records 16 spelling variants around epinephrine (IPA /ˌɛp.ɪˈnɛ.fɹɪn/), anoun. Corpus frequency is #41,110 among 18,836 “E” headwords. Dominant gloss: "A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized...".
Our generated misspelling index lists 16 likely wrong-spelling variants for epinephrine, with forms such as "eipnephrine", "epienphrine", and "epinehprine". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From Ancient Greek ἐπι- (epi-, “upon”) + νεφρός (nephrós, “kidney”) + -ine. The correct English form is epinephrine, spelled E-P-I-N-E-P-H-R-I-N-E.
Definition
- 1A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. It is also used as a medication.
Etymology
From Ancient Greek ἐπι- (epi-, “upon”) + νεφρός (nephrós, “kidney”) + -ine.
Synonyms
This word in other languages
Common misspellings
Also misspelled as:
- eipnephrine
- epienphrine
- epinehprine
- epinephhrine
- epinephirne
- epinephrien
- epinephrinne
- epinephrnie
- epinephrrine
- epinepphrine
- epineprhine
- epinnephrine
- epinpehrine
- epniephrine
- eppinephrine
- peinephrine
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of epinephrine - 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
How do you spell "epinephrine"?
What does "epinephrine" mean?
What are common misspellings of "epinephrine"?
How do you pronounce "epinephrine"?
What is the origin of the word "epinephrine"?
Is PlainSpell free to use?
Using “epinephrine”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is E-P-I-N-E-P-H-R-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˌɛp.ɪˈnɛ.fɹɪn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.