layperson vs. secular
leaseholder vs. lessee
linguist vs. polyglot
lector vs. reader
lecturer vs. reader
linkboy vs. linkman
liquidator vs. receiver
liquidator vs. murderer
liquidator vs. manslayer
Lady vs. noblewoman
Lady vs. peeress
litigant vs. litigator
legionary vs. legionnaire
litterbug vs. litterer
lazar vs. leper
lepidopterist vs. lepidopterologist
loader vs. lumper
loader vs. stevedore
loader vs. longshoreman
landlubber vs. lubber
landlubber vs. landsman
landlubber vs. landman
locater vs. locator
leveler vs. leveller
lockman vs. lockmaster
lockkeeper vs. lockmaster
landholder vs. landowner
lexicographer vs. lexicologist
liar vs. prevaricator
liberalist vs. progressive
larcener vs. larcenist
lowerclassman vs. underclassman
loyalist vs. stalwart
luger vs. slider
luminary vs. notable
ladino vs. mestizo
lurker vs. skulker
lurcher vs. lurker
lutanist vs. lutist
lutenist vs. lutist
lyricist vs. lyrist
logician vs. logistician
logomach vs. logomachist
lingerer vs. loiterer
lamenter vs. mourner
lord vs. master
lampooner vs. parodist
lensman vs. photographer
limner vs. portraitist
looter vs. spoiler
lowlife vs. stinkpot
lecher vs. satyr
lech vs. satyr
letch vs. satyr
lulu vs. smasher
looker vs. smasher
looker vs. spectator
lapidator vs. stoner
lawbreaker vs. violator
laundryman vs. washerman
laundrywoman vs. washwoman
laundress vs. washwoman
liliopsid vs. monocot
lithops vs. stoneface
loofah vs. luffa
loofa vs. luffa
lacebark vs. ribbonwood
leatherwood vs. moosewood
leatherwood vs. wicopy
leatherwood vs. ropebark
labdanum vs. ladanum
lontar vs. palmyra
lemanderin vs. rangpur
lentisk vs. mastic
lacewood vs. sycamore
leafstalk vs. petiole
lucre vs. net
letting vs. rental
loot vs. pillage
loot vs. strip
losings vs. losses
livelihood vs. support
lacrimation vs. watering
lachrymation vs. watering
leach vs. leaching
leach vs. strip
leach vs. percolate
lexicalisation vs. lexicalization
lysogenisation vs. lysogenization
lookup vs. search
lb vs. pound
lowliness vs. obscureness
logginess vs. loginess
lymphangiectasia vs. lymphangiectasis
lues vs. pox
leishmaniasis vs. leishmaniosis
lockjaw vs. tetanus
leucocytosis vs. leukocytosis
leucopenia vs. leukopenia
lymphocytopenia vs. lymphopenia
lesion vs. wound
lipaemia vs. lipemia
lipemia vs. lipidemia
lipemia vs. lipidaemia
lipemia vs. lipoidemia
lipemia vs. lipoidaemia
lysogenicity vs. lysogeny
leukaemia vs. leukemia
leucaemia vs. leukemia
leucoma vs. leukoma
lyssa vs. madness
labyrinthitis vs. tympanitis
lack vs. miss
lameness vs. limping
lull vs. quiet
letup vs. lull
lutecium vs. lutetium
lactate vs. suck
lutein vs. xanthophyll
lambskin vs. sheepskin
luteotropin vs. prolactin
lampblack vs. smut
lubricant vs. lubricator
lube vs. lubricant
lube vs. lubricate
lino vs. linoleum
lipid vs. lipide
lipid vs. lipoid
loadstone vs. lodestone
lysozyme vs. muramidase
lunation vs. moon
lave vs. wash
languish vs. waste
languish vs. yen
lessen vs. subside
lighten vs. relieve
launder vs. wash
lose vs. suffer
lose vs. misplace
lose vs. mislay
lose vs. miss
luxuriate vs. wanton
locate vs. settle
locate vs. place
locate vs. situate
loosen vs. undo
loosen vs. untie
loosen vs. tease
loosen vs. relax
liquefy vs. liquify
liquefy vs. liquidize
liquefy vs. liquidise
luxate vs. slip
lapidify vs. petrify
larn vs. learn
learn vs. see
learn vs. study
learn vs. teach
lowball vs. underestimate
liaise vs. mediate
lambaste vs. rag
lambast vs. rag
Latinise vs. Romanise
Latinise vs. Romanize
Latinize vs. Romanise
Latinize vs. Romanize
labialize vs. round
labialise vs. round
lurk vs. tarry
lurk vs. skulk
lapidate vs. stone
larrup vs. spank
lop vs. sever
liquidate vs. waste
liquidate vs. realise
liquidate vs. realize
localize vs. place
localise vs. place
liberate vs. release
locomote vs. move
librate vs. weigh
linger vs. tarry
linger vs. wiggle
listen vs. mind
laze vs. slug
legislate vs. pass
litigate vs. process
loiter vs. tarry
lollygag vs. tarry
lallygag vs. tarry
mischievously vs. naughtily
modishly vs. stylishly
middling vs. passably
middling vs. reasonably
middling vs. moderately
middling vs. pretty
middling vs. somewhat
mediocre vs. middling