This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Impossible to span: an unbridgeable chasm; unbridgeable differences.

adj. Unable to be bridged or crossed; impossible to span.

adj. not bridgeable

"Deputy CP leader Willie Snyman has also rejected co-operation, because of what he termed unbridgeable differences on principles."

unbridged    north/south    million-year    a-shaped    ever-widening