| Svensk | lek | play, banter, cf. lugað11.1. |
| Svensk | bläcka | Lapwing, 158 |
| Dan. | blinker | id. |
| Engl. | blink | to wink |
| Fris. | bleaker | candle |
| ON | natt-blakka | (prosth. /b/) bat, app. 16 |
| Engl. | black-bearaway | bat, app. 16 |
| Dan. | bakke | id. |
| Svensk | natt-bakka | (loss of /l/) bat, app. 16 |
| Engl. | bak et var. | bat, app. 16 |
| Lith. | lekti | to fly |
| Bulg.(o.liter.) | lekti | to fly |
| Sbc. | lektati | flutter |
| Sbc. | odalèskati | flutter |
| Lith. | lakstir | flutter |
| Tokh.B | slakkare | mobile, agile |
| tokh.A | lankste | light |
| Anc.Greek | likmao | to winnow |
| Anc.Greek | lekao | to dance |
| goth. | laikan | to jump |
| Lettish | lekt | to jump |
| Lith. | sliuokti | to climb |
| l. | luctare | to ficht, cf. pelearð6.2.6. |
| Alb. | lukuris | I fall head over heels |
| Ital. | locusta | grasshopper |
| Breton | lochein | to shake |
| Franç. | locher | to shake, agitate |
| Span.: And. | pájaro loco | White Wagtail, 313 |
| Span. | loco | crazy, cf. lojtarð11.5. |
| Basque | lokatu | oscillate |
| Basque | lokorotz | marsh |
| Prov. | lico | mud, cf. lapað11.1. |
| Franç.: wall. | leque | muddy sediment |
| Alb. | lajka | flattery, cf. flagornerð6.2.12. |
| Alb. | lakatum | labbyð6.2.11. |
| Engl. | lack | deficiency |
| Engl. | slack | not tight, relaxed; coal dust |
| Engl. | lackaday | languide ð11.3. (not "a coined word" as in Klein) |
| Lat. | laxus | slack |
| Gael.I. (o.liter. | lacc | slack, weak |
| Engl. reg. | glaik | to act lightly; bat, app. 16 |
| Mod.Greek | lachtaro | to wiggle |
| Mod.Greek | lachtarístos | palpitating, fluttering |
| Mod.Greek: Crète | lachtarída | bat, 16.2 |
| Ital.: Cal. | lakhtarídha et var. | bat, 16.2 |
| Ital.: Sard. | licchidu | agile |
| Ital. | líquido | fluid, liquid |
| Anc.Greek | alyktazo | to be agitated |
| Anc.Greek | leichen | lichen: light organism, cf. Germ. flechtð6.2.11. (no possible semantic relation to Gr. leichein "to lick") |
| Germ. | leichen | to play, cf. lek, above |
| Germ. | leicht | lightð11.3. |
| Alb. | lehtë | light, frivolous |
| Franç. | leste | light, nimble, agile |
| Svensk | löst | lightly |
| Anc.Greek | lèstès | thief |
| Ital. | lucertola | lizard |
| Germ.: VS | lischeetäru | lizard |
| Cymric | lost | tail: moving organ |
| Czech | listi | leaves |
| Lettish | laisties | to fly |
| Roman. | lâstun | Swift, 321 |
| Sbc. | lasta | Swallow, 316 |
| Pol. | lastawiczka, | Swallow, 316 |
| Pol. | jastawiczka | Swallow, 316 |
| Pol. | jaskolka | Swallow, 316 |
| Pol. | laska | flexible stick |
| Basque | leska | reed |
| Ital.: Piem. | lesca | reed, Basque liska, French laîche, Germ. leis. |
| Franç. | laîche | see preceding; today given to some marsh plants, particularly of the genus Carex |
| Lettish | liSkat | to float |
| Lettish | laistities | spark |
| Lettish | laistit | to sprinkle |
| Lettish | laist | to let |
| Lith. | laisvé | freedom |
| Germ. | lassen | to let |
| Alb. | lasë | clothes beater (washing) |
| Franç. | lessiveuse | washer woman |