[KevinH]

Because scowl seems to not have even one hyphenated word in its word list I have found a list of the most common hyphenated words and will add them before the final release:

Here is the most-common list. Additions or corrections welcome.

able-bodied
anti-theft
brother-in-law
brother-in-law's
brothers-in-law
brothers-in-law's
call-up
check-in
clean-cut
co-worker
co-workers
co-worker's
corn-fed
daughter-in-law
daughter-in-law's
daughters-in-law
daughters-in-law's
de-emphasize
de-emphasized
double-cross
double-crossing
double-crossed
double-park
double-parking
double-parked
empty-handed
ex-husband
ex-husband's
ex-husbands
face-saving
family-run
father-in-law
father-in-law's
fathers-in-law
fathers-in-law's
follow-up
four-letter-word
front-runner
front-runner'ss
front-runners
front-running
full-time
get-together
get-togethers
good-looking
habit-forming
half-witted
high-spirits
high-spirited
high-tech
ill-timed
in-depth
know-it-all
large-scale
left-handed
life-size
life-sized
long-term
low-grade
low-key
merry-go-round
middle-aged
mother-in-law
mother-in-law's
mothers-in-law
mothers-in-law's
near-sighted
non-starter
not-for-profit
off-peak
off-site
old-fashioned
on-campus
one-half
one-sided
over-the-counter
part-time
passer-by
price-fixing
quick-witted
round-trip
run-in
runner-up
self-service
self-serving
short-change
short-changed
shrink-wrap
shrink-wrapped
single-minded
state-of-the-art
strong-arm
three-dimensional
tie-break
tie-breaker
tip-off
toss-up
two-fold
two-thirds
u-turn
u-turns
ultra-violet
up-to-date
walk-on
warm-up
well-being
well-known
word-of-mouth
worn-out
x-ray