9-Letter Words Matching ______O_R

There are 21 9-letter words that match ______O_R. 13 are common words, such as BEHAVIOUR and DEMEANOUR. A rarer one is SNOWSHOER. In this set, E is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 21

behaviourdemeanourdiscolourdisfavourendeavourmoviegoerneighbourpompadourreservoirshampooersplendourtricolourwrongdoerantechoircarrefourcornflourbeachgoerbeglamouroperagoerrecontoursnowshoer

About this list

Words
21 (13 common words)
Common example
behaviour
Rare example
snowshoer
Doubled letters
2
Ending in S
0
Most frequent letter
E (16)

Questions

How many 9-letter words matching ______o_r are there?

21. 13 of them are common words.

What is a common example?

BEHAVIOUR is among the common words in this set.