Word Pronunciation & Dictionary

undecillion

/ˌʌndəˈsɪl.i.ən/

Word Rarity Very rare

Frequency: Zipf frequency 0.00 in modern English

Syllables
un-decil-lion
IPA
/ˌʌndəˈsɪl.i.ən/
14
Scrabble Score
11
Letters
3
Syllables
8
Unique Chars

Meaning

num

10³⁶.

American usage

num

10⁶⁶.

Example Sentences

Etymology

From Latin undecim (“eleven”) + -illion. By surface analysis, undec- + -illion.

Word Breakdown

Usage

Inflected Forms

Derived Forms

Phrases

Previous: decillion. Next: duodecillion.

Frequently Paired Words

decillion Previous: decillion. Next: duodecillion.

Synonyms

1036 1066

Rhymes With

Questions

How do you pronounce undecillion?
The recorded pronunciation is /ˌʌndəˈsɪl.i.ən/.
What does undecillion mean?
10³⁶.
Where does undecillion come from?
From Latin undecim (“eleven”) + -illion. By surface analysis, undec- + -illion.

How to pronounce undecillion

  1. Open the pronunciation page — Open the Speakur entry for “undecillion”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˌʌndəˈsɪl.i.ən/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “undecillion”.
  4. Repeat and practice — Say “undecillion” aloud, matching stress and vowels until it feels natural.