The story
- Proto-Germanic · derived from*tūdrijaz“brittle; weak; exhausted”
- Proto-Germanic · inherited from*tūdrijaną“to become brittle or weak; exhaust”
- Old English · inherited fromtīdrian
- Middle English · inherited fromtidren
- English todaytidder
From Middle English tidren, from Old English tīdrian, tȳdrian (“to become weak or infirm; be frail”), from Proto-Germanic *tūdrijaną (“to become brittle or weak; exhaust”), from Proto-Germanic *tūdrijaz (“brittle; weak; exhausted”), equivalent to Old English tid + -er. Related to Old English tiddre, tyddre, tēdre, tīdre, tȳdre (“weak; fragile”), West Frisian tear (“tender; gentle”), Dutch teder (“tender; fond; gentle; loving”), German Low German teder (“fine; delicate; sensitive; tender; weak”).
Etymology from Wiktionary, CC BY-SA 4.0.