How to pronounce undecillion
Say it like uhn-duh-SIL-ee-un. Undecillion has five syllables, and the main stress falls on the third one (SIL).
Click the play button next to American or British to hear how to pronounce undecillion. Choose Slow to hear each sound clearly.
- uhn
- duh
- SIL
- ee
- un
- Main stress
- Lighter stress
- Unstressed
Undecillion pronunciation, sound by sound
Read the parts left to right, then blend them together without pausing.
- uhnGive this part a little weight. The vowel is the "u" in cup.
- duhKeep this part quick and light. The vowel is the relaxed "uh" in about.
- SILSay this part loudest and longest. The vowel is the "i" in sit.
- eeKeep this part quick and light. The vowel is the "ee" in see.
- unKeep this part quick and light. The vowel is the relaxed "uh" in about.
American vs British pronunciation of undecillion
American and British speakers say undecillion in essentially the same way: /ˌʌndəˈsɪliən/ in the US and /ˌʌndəˈsɪliən/ in the UK.
British respelling: uhn-duh-SIL-ee-un.
What does undecillion mean?
- 10³⁶.
- 10⁶⁶.
Where does undecillion come from?
From Latin undecim (“eleven”) + -illion.
Words that rhyme with undecillion
Practicing rhymes is a quick way to lock in the vowel sound of undecillion.
Questions about saying undecillion
How do you pronounce undecillion?
Say uhn-duh-SIL-ee-un. The American pronunciation is /ˌʌndəˈsɪliən/. In British English it is /ˌʌndəˈsɪliən/. Press play above to hear it at normal speed or slowly.
How many syllables are in undecillion?
Undecillion has five syllables, and the main stress falls on the third one (SIL). Broken into parts: uhn · duh · SIL · ee · un.
Do Americans and Brits say undecillion the same way?
Almost exactly. The American form is /ˌʌndəˈsɪliən/ and the British form is /ˌʌndəˈsɪliən/, so you can use either pronunciation with any listener.