The usual – what do the following words have in common; either post your guess in a spoiler box or add some more.
Ale
Bare
Caped
Coma
Coral
Dogie
Doted
Drop
Duly
Filet
Fury
Holy
Late
Loped
Mate
Pal
Pose
Prof
Puny
Ruble
Ruder
Slop
The
Tiny
Waged
I am chatting on IM with the former poster audient, and he got it in less than ten minutes.
I’m pretty sure the following can be added to the list:
Bet
Filed
Met
Stared
Is that you can double one of the letters to make a new word? Are Alle, Barre, Matte, and Filet English words?
DeadCat – it’s a trifle more specific than that. Only one of your examples works, specifically Filed
And to answer the general question in your spoiler box, without addressing the examples you gave, all the words I had in mind are English words, with no proper nouns involved.
Aha, got it.
[spoiler]I noticed that some of the words could have interior letters doubled to make a new word, but it took awhile to realize that it could be any letter.
Ops. 
[/spoiler]
twickster, don’t Dead Cat’s examples work?
Beet, Filled, Meet, Starred
For what I have in mind, only two of Dead Cat’s words would work.
Except ale wouldn’t. Hmmm.
doublethe third letter to make a new real word? Is “alee” a word? Except for that one it works.
Yes it is, a nautical expression
Yup, the lovely Ms. Suze got it.
Well, I can see I’m late again; but aren’t they words that make other words with the consonant doubled?
Whoops – internal letter. could be a vowel, like in prof/proof.
I haven’t looked at the previous answers… honest!
I’m pretty sure it’s that:
You can double up the third letter in each word, and up with a different real English word
So, other words that work would include:
fined
bred
sped
scop
[Spoiler]As has been already determined, the “ale” word is alee – it’s a crossword puzzle standard which means “to the sheltered (leeward, as opposed to windward) side”. I’m sure twickster groaned every time she had to allow it into a grid during her stint as a puzzle editor.
Barre is a ballet term for the handrail used during warm-up exercises – twicks is quite the fan of dance.
Matte refers to a non-glossy finish on photos.
Fillet is a variant spelling of filet (a boneless cut of meat), and also (when pronounced “fill-it”) is a mechanical engineering term.[/spoiler]