Added 10 October 2026 grimm noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. More about grimm at Wordnik → Where our words come from → The younger of the two Grimm brothers remembered best for their fairy stories (1786-1859). The older of the two Grimm brothers remembered best for their fairy stories; also author of Grimm's law describing consonant changes in Germanic languages (1785-1863). Related Words: greenegreennevisgrimmegrimmergrimmiegrismergrimgrimsgrismore Back to today's word