WNW: What Do These Words Have in Common?

FIRST, A REMINDER: The registration deadline for the Precision Editing live critique workshop is coming up. The workshop will be much like the Storymaker conference Boot Camp, but all day, and with less of a crowd.
MORE: The workshop is Saturday, August 13, 10:30 to 3:30. Cost: $35 for the day. (A one-hour lunch break is on you.)
CLICK HERE for more info.

Serious word nerd alert here.
I found this list of terms not too long ago. I'm posting it now with a question for you:
What do all of these words have in common?
I'll post the answer later.

Kindle
Sleuth
Leash
Brace
Charm
Drift
Exaltation
Grist
Leap
Murder
Bed
Sounder
Chattering
Spring
Trip
Watch
Wing
Rafter
Clamor
Kettle
Mute
Unkindness
Wisdom
Train
Gulp
Skulk
Rhumba
Clutter
Bloat
Troubling

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