Where does “*grāu” come from?

*grāu (Proto-Germanic) comes from Proto-Germanic grēwaz, from Proto-Indo-European ǵʰreh₁- — to become green, grow; to grow; to green, to grow.

Ancestry of “*grāu”, step by step

StepLanguageWordMeaning
1Proto-Germanicgrēwazgrey
2Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow
Every word from Proto-Indo-European ǵʰreh₁- →Every word from Proto-Germanic grēwaz →