Where does “grēslich” come from?

grēslich (Middle High German) comes from Middle Low German grēselîk, from Old English grīsan, from Proto-Germanic *grīsaną — to shudder, to shake.

Ancestry of “grēslich”, step by step

StepLanguageWordMeaning
1Middle Low Germangrēselîk—
2Old Englishgrīsanto shudder with horror; to tremble, to be...
3Proto-Germanic*grīsanąto shudder, to shake
Every word from Proto-Germanic *grīsaną →Every word from Old English grīsan →Every word from Middle Low German grēselîk →