Where does “lingan” come from?

lingan (Old High German) comes from Proto-Germanic lingwaną, from Proto-Indo-European h₁lengʷʰ- — light.

Ancestry of “lingan”, step by step

StepLanguageWordMeaning
1Proto-Germaniclingwanąto make progress, succeed
2Proto-Indo-Europeanh₁lengʷʰ-light
Every word from Proto-Indo-European h₁lengʷʰ- →Every word from Proto-Germanic lingwaną →