Merriam-Webster's Collegiate Dictionary:
low-spiritedly
low-spiritedness
low-tech
lowball
lowborn
lowboy
lowbred
lowbrow
lowdown
lowe
lowell
lower
lower 48
lower canada
lower class
lower criticism
lower fungus
lower klamath lake
lower peninsula
lower saxony
lower the boom
lower-class
lowercase
lowering
lowermost
lowery
lowes
lowest common denominator
lowest common multiple
lowest terms
lowestoft
lowland
lowland gorilla
lowlander
lowlands
lowlife
lowlight
lowlihead
lowliness
lowly
lown
lowndes
lowness
lowrider
lowry
lox
loxodrome
loyal
loyalist
loyally
loyalty
loyalty islands
loyang
loyola
lozenge
lp
lpg
lpga
lpn
lr
lrt
lrv
ls
lsd
lsi
lsm
lso
lss
lst
lt
lt col
lt comdr
lt gen
lt gov
ltc
ltd
ltg
lth
ltjg
ltl
ltp
ltr
lts
lu
lu hs?n
lu-ta
lualaba
luanda
luang prabang
luangue
luau
lubavitcher
lubber
lubber line
lubber's hole
lubberliness
lubberly
