- laboriousnesses21
- labyrinthodonts26
- lackadaisically31
- laryngectomized37
- latensification24
- lateralizations27
- latitudinarians20
- laughablenesses26
- lecherousnesses23
- legislatorships24
- legitimizations31
- leisurelinesses19
- lepidopterology28
- leukaemogeneses27
- leukaemogenesis27
- levelheadedness26
- lexicalisations28
- lexicalizations37
- lexicographical37
- liberalizations30
- libertarianisms23
- lickerishnesses26
- lightfastnesses24
- lightsomenesses24
- lignocelluloses26
- lignocellulosic29
- lignosulfonates25
- limitlessnesses21
- literalizations27
- litigiousnesses20
- liturgiologists22
- loathsomenesses22
- logarithmically30
- logographically32
- longsightedness25
- lucrativenesses25
- ludicrousnesses23
- luxuriousnesses27
- lymphadenitises28
- lymphadenopathy35
- lymphangiograms34
- lymphogranuloma34
- lymphosarcomata32
- lyophilizations34
- lysogenizations31