12-Letter Words Matching U________R__

There are 18 12-letter words that match U________R__. 6 are common words, such as UNCONSIDERED and UNDISCOVERED. A rarer one is UREDIOSPORES. 4 words contain a doubled letter.

Full list 18

unconsideredundiscoveredunencumberedunregisteredunrememberedunstructuredultraliberalunderpoweredunendangeredunfamiliarlyunneighborlyundecipheredunderinsuredunderreportsundersteeredunembitteredunscripturalurediospores

About this list

Words
18 (6 common words)
Common example
unconsidered
Rare example
urediospores
Doubled letters
4
Ending in S
2

Questions

How many 12-letter words matching u________r__ are there?

18. 6 of them are common words.

What is a common example?

UNCONSIDERED is among the common words in this set.