unchallengeable

1. 1.

   not open to challenge

   “unchallengeable facts”

   “a position of unchallengeable supremacy”

   Similaruncontroversial

Questions about unchallengeable

What does unchallengeable mean?

unchallengeable means "not open to challenge".

How many syllables are in unchallengeable?

unchallengeable has 6 syllables: un-chal-len-ge-a-ble. The stress falls on "ge".

Is unchallengeable a common word?

unchallengeable is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.