"widened out" is a correct and usable phrase in written English.
It means to become wider or to increase in width. Example: The road widened out as we drove further into the countryside.
The investigation widened out to take in the rest of the GS9 crew, and police seized 21 guns.
Those portions that widened out north of the Isthmus of Panama became known as North America, and those that broadened to the south became known as South America.
Dyad 1909 was commissioned to celebrate the centenary of Diaghilev's Ballets Russes, but its scope was widened out to include the scientific and political context of Diaghilev's era.
If the debate is genuinely about consent, then it needs to be widened out considerably, rather than serving as a vehicle for an attack on religious practice.
We all know it's inspired by Tolkien, but at the same time they're widened out so they're more universal than that.
The plethora of policies is likely to spark concern about adding another burden on businesses, particularly as the MOTs would be widened out beyond the usual measures of carbon dioxide to look at all energy use, water, waste and recycling, and the resources used in constructing new buildings.
"If it can widen out there, surely we can find a way to widen it out elsewhere".
The Belt of Happiness widens out as it winds near the Caspian into Baku.
Interest rate spreads between Aaa-rated or Aa-rated municipalities and Baa and A-rated municipalities will widen out.
Coverage widens out to include a discussion of security at the Derby and then a short biography on Emily Davison.
The conflict could widen out further still, with former Soviet republics supporting Russia and the US and Europe backing Georgia.
