Where does “dyddlyfr” come from?

dyddlyfr (Welsh) comes from Welsh llyfr, from Middle Welsh llyuyr, from Proto-Brythonic llɨvr, from Latin liber, from Old Latin loeber, from French lober, from French lob, from English lob — limestone; chalk; the finish line.

dyddlyfr (Welsh): diary, journal, daybook

Definitions

  1. diary, journal, daybook

Ancestry of “dyddlyfr”, step by step

dyddlyfr traces back through two separate lines of ancestry.

via Welsh llyfr

StepLanguageWordMeaning
1Welshllyfrbook
2Middle Welshllyuyr
3Proto-Brythonicllɨvr
4Latinliberfree, independent, unrestricted, unchecked; open;...
5Old Latinloeber
6Frenchloberto lob
7Frenchloblob
8EnglishlobTo throw or hit a ball into the air in a high...
9EnglishlongHaving much distance from one terminating point...
10EnglishlongitudeAngular distance measured west or east of the...
11Old Frenchlongitude
12Latinlongitūdōlength, longitude; longness
13Latinlongusfar, long; extended, prolonged; long; tedious,...
14Latinly; used to form adverbs from adjectives
15Latindis-asunder, apart, in two; reversal, removal;...
16Latincalceusshoe
17Latincalxlimestone; chalk; the finish line

via Welsh dydd

StepLanguageWordMeaning
1Welshdyddday, daytime
2Middle Welshdyðday
3Old Welshdidday
4Proto-Brythonicdiðday, daytime
5Proto-Celticdīyosday
6Proto-Indo-Europeandyḗwssky, heaven; sky god
7Proto-Indo-Europeandyéwssky, heaven
8Proto-Indo-Europeandyew-to be bright; sky, heaven
Every word from Latin calxEvery word from Latin dis-Every word from Latin