hard-on
/ˈhɑɹdɑn/
"hard-on" is a 6-letter English headword indexed on PlainSpell.
The verdict
“hard-on” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An erection of the penis.
| Property | Value |
|---|---|
| Headword | hard-on |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈhɑɹdɑn/ |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “hard-on” sits in English frequency
Spelling & Dictionary Insight
The English entry for hard-on is 7 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈhɑɹdɑn/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
hard-on has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.
This headword's origin isn't recorded in our source data, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is hard-on, spelled H-A-R-D---O-N.
Definition
- 1An erection of the penis.
- 2A desirous arousal based on a fascination or obsession.
Synonyms
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "hard-on"?
What does "hard-on" mean?
How do you pronounce "hard-on"?
What language does "hard-on" come from?
Is PlainSpell free to use?
Using “hard-on”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is H-A-R-D---O-N - every other letter order is a misspelling in standard orthography.
- Say it as /ˈhɑɹdɑn/ (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
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.