| Hitt. | luk | set ablaze, getting light |
| Anc.Greek | leukos | shining, clear |
| Anc.Greek | Leukè | the White Islands; see Elysion, 3.1.24 |
| Lat. | lux | light |
| Tokh.B | lyuke-mo | luminous, bright |
| Lith. | laukas | pale |
| Skr. | lokas | world ð3.2.29. |
| Lat. | locus | (borrowing) world |
| Ital. | lucore, lucciare | splendour |
| Roman. | lucoare | glitter |
| Franç.: reg. | luque | light |
| Franç.: reg. | luquette | lighting match |
| Franç. | lucarne | dormer window |
| Engl. | look | to appear, look |
| Franç.: reg. | luquer | to shine; to look |
| Franç. | reluquer | to look |
| Franç.: reg. | aluquer | to light |
| Franç.: reg. | enluquer | illuminate |
| Franç.:o. | éluc | lightning |
| Franç.: Montricher | alequèt | pretty, graceful, FEW 22: 50 |
| Roman. | alaciu | variegated, pale yellow |
| Roman. | alác | barley |
| Esp. | álaga | a yellow cereal |
| Arm. | alik | white beard; white tops (on sea) |
| Anc.Greek | èlektror | radiant sun |
| Anc.Greek | èlektron | amber |
| Anc.Greek | lukaugès | dawn, twilight |
| Anc.Greek | lynkourion | (nasal.) a kind of amber |
| l. | langurium | (calque of Greek) |
| Anc.Greek | lykábas | light |
| lit. dial. | liktis | light |
| Engl. | sleek | glossy (not a doublet of slick "smooth") |
| Czech | slicný | beautiful |
| Slk. | slecnyk | Blue Tit, 391 |