dehydrate

/diːhaɪˈdɹeɪt/

//diːhaɪˈdɹeɪt// verb

By · According to Wiktionary data (CC BY-SA) ·

"dehydrate" is a 9-letter English headword indexed on PlainSpell.

The verdict

“dehydrate” is uncommon English (frequency #67,355 among 3,470 “D” headwords), classed as a verb. The kind of spelling people second-guess.

#67,355
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To remove water from; to dry up.

Corpus desk

Index EN-dehydrate · dehydrate · English

dehydrate · rank #67,355 · 0 variants · 0 confusables

  • FREQ-RARE #67,355
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH debauched

Nearest frequency peer: debauched (-2 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.

Long-tail ranks near “dehydrate”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “dehydrate” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for dehydrate
PropertyValue
Headworddehydrate
LanguageEnglish
Part of speechVerb
IPA/diːhaɪˈdɹeɪt/
Letters9
Frequency rank#67,355
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “dehydrate” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).dehydratefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “debauched” (#67,353), “Delon” (#67,357), “dauphine” (#67,351). Among 3,470 “D” headwords, “dehydrate” is #67,355. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

dehydrate is uncommon English at frequency #67,355 among 3,470 “D” headwords, classed as averb, transcribed /diːhaɪˈdɹeɪt/. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for dehydrate, a straightforward case of a spelling with little room for common typos. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From de- + hydrate. The correct English form is dehydrate, spelled D-E-H-Y-D-R-A-T-E.

Definition

  1. 1
    To remove water from; to dry up.
  2. 2
    To lose water from one's body; to become dehydrated.

Recorded use

Wiktionary examples

These source excerpts show how dehydrate appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. dehydrate food
  2. Running in the heat can quickly dehydrate you.

Etymology

From de- + hydrate.

Synonyms

desiccateexsiccateparch

Antonyms

hydratemoistenmoisturizesoak

This word in other languages

deshidratar(Español)déshydrater(Français)dehydrieren(Deutsch)

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 "dehydrate"?
"dehydrate" is spelled D-E-H-Y-D-R-A-T-E. The IPA pronunciation is /diːhaɪˈdɹeɪt/.
What does "dehydrate" mean?
As a verb, "dehydrate" means: To remove water from; to dry up.
How do you pronounce "dehydrate"?
The IPA (International Phonetic Alphabet) transcription for "dehydrate" is /diːhaɪˈdɹeɪt/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "dehydrate"?
From de- + hydrate. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "dehydrate", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

debauched#67,353digitizer#67,369crossbody#67,339credulous#67,336

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list