declivity
/dɪˈklɪvɪti/
"declivity" is a 9-letter English headword indexed on PlainSpell.
The verdict
“declivity” 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
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The downward slope of a curve.
| Property | Value |
|---|---|
| Headword | declivity |
| Language | English |
| Part of speech | Noun |
| IPA | /dɪˈklɪvɪti/ |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “declivity” sits in English frequency
Spelling & Dictionary Insight
The English entry for declivity is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /dɪˈklɪvɪti/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
We couldn't generate a plausible misspelling set for declivity, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: 1610s, from French déclivité, from Latin declivitatem, dēclīvitās, from dēclivis (“a sloping downward”), from de (“down”) + clīvus (“a slope”), from Proto-Indo-European *ḱleywo-, from Proto-Indo-European *ḱley- (“to lean”) (English lean). The correct English form is declivity, spelled D-E-C-L-I-V-I-T-Y.
Definition
- 1The downward slope of a curve.
- 2A downward bend in a path.
- 3An inward curve of the exoskeleton of an insect, such as between body segments; a segment of an insect's body where the exoskeleton curves inward.
Etymology
1610s, from French déclivité, from Latin declivitatem, dēclīvitās, from dēclivis (“a sloping downward”), from de (“down”) + clīvus (“a slope”), from Proto-Indo-European *ḱleywo-, from Proto-Indo-European *ḱley- (“to lean”) (English lean).
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
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Using “declivity”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-E-C-L-I-V-I-T-Y - every other letter order is a misspelling in standard orthography.
- Say it as /dɪˈklɪvɪti/ (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.