upregulation
"upregulation" is a 12-letter English headword indexed on PlainSpell.
The verdict
“upregulation” is uncommon English (frequency #86,901 among 1,433 “U” headwords), classed as a noun. The kind of spelling people second-guess.
- #86,901
- frequency rank, English
- 1,433
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The process, in the regulation of gene expression, in which the number, or activity of receptors increases in order to increase sensitivity.
Corpus desk
Index EN-upregulation · upregulation · English
upregulation · rank #86,901 · 0 variants · 0 confusables
- FREQ-RARE #86,901
- LEN-MEGA 12 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH upvotes
Nearest frequency peer: upvotes (+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.
Long-tail ranks near “upregulation”
Sparse band: bars invert rank so rarer forms read shorter
- unsubsidized
unsubsidized
13,104 corpus weight
- untrusted
untrusted
13,103 corpus weight
- unverifiable
unverifiable
13,102 corpus weight
- upregulation
upregulation
13,100 corpus weight
- upvotes
upvotes
13,099 corpus weight
- USFWS
USFWS
13,096 corpus weight
What this shows Long-tail view: where “upregulation” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | upregulation |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Frequency rank | #86,901 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “upregulation” in English
Rare enough to double-check
upregulation is uncommon English at frequency #86,901 among 1,433 “U” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The process, in the regulation of gene expression, in which the number, or activity of receptors increases in order to increase sensitivity.".
Our edit-distance generator produced no likely misspellings for upregulation, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From up- + regulation. The correct English form is upregulation, spelled U-P-R-E-G-U-L-A-T-I-O-N.
Definition
- 1The process, in the regulation of gene expression, in which the number, or activity of receptors increases in order to increase sensitivity.
Etymology
From up- + regulation.
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.
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "upregulation", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 12 letters (nearest by frequency rank).