Where does “sieren” come from?

sieren (Middle Dutch) comes from Middle High German zieren, from Old High German ziarōn, from Proto-West Germanic tiari-, from Proto-Germanic diH-or-i-.

Ancestry of “sieren”, step by step

StepLanguageWordMeaning
1Middle High Germanzieren—
2Old High Germanziarōn—
3Proto-West Germanictiari-neat, splendid
4Proto-GermanicdiH-or-i-—
Every word from Proto-Germanic diH-or-i- →Every word from Proto-West Germanic tiari- →Every word from Old High German ziarōn →