proliferous

adj

"proliferous" is a 11-letter English headword indexed on PlainSpell.

The verdict

“proliferous” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Producing many offspring; prolific or proliferative.

Corpus desk

Index EN-proliferous · proliferous · English

proliferous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "P" thin
  • PHOTO-UNK Peer pending

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.

Key facts for proliferous
PropertyValue
Headwordproliferous
LanguageEnglish
Part of speechAdjective
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “proliferous” in English

proliferoussits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

proliferous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 3 senses are on record.

The misspelling generator found no plausible variants for proliferous, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From Latin prōlifer, from prōlēs (“offspring”) + -fer (“bearing”), + -ous. The correct English form is proliferous, spelled P-R-O-L-I-F-E-R-O-U-S.

Definition

  1. 1
    Producing many offspring; prolific or proliferative.
  2. 2
    Producing many buds or offshoots from leaves or flowers.
  3. 3
    Reproducing by budding.

Etymology

From Latin prōlifer, from prōlēs (“offspring”) + -fer (“bearing”), + -ous.

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 "proliferous"?
"proliferous" is spelled P-R-O-L-I-F-E-R-O-U-S.
What does "proliferous" mean?
As an adjective, "proliferous" means: Producing many offspring; prolific or proliferative.
What is the origin of the word "proliferous"?
From Latin prōlifer, from prōlēs (“offspring”) + -fer (“bearing”), + -ous. 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.

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

Source: FrequencyWords open word-frequency list