Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
dubh
←
Breton
du
(cognate)
←
Gaulish
-
(cognate)
←
Gaulish
Dubis
(mention)
←
Proto-Celtic
*dubus
(inherited)
←
Welsh
du
(cognate)
←
German
taub
(cognate)
←
English
Doubs
(mention)
←
English
deaf
(cognate)
←
English
dumb
(cognate)
←
Gothic
𐌳𐌰𐌿𐌱𐍃
(cognate)
←
Ancient Greek
τυφλός
(cognate)
←
Proto-Indo-European
*dʰewbʰ-
(root)
←
Proto-Indo-European
*dʰewbʰ-
(inherited)
←
Cornish
duv
(cognate)
←
Cornish
du
(mention)
←
Old Irish
dub
(inherited)
→
English
Douglas
(derived)
→
English
Dougal
(mention)
→
English
sgian dubh
(mention)
→
Scottish Gaelic
Dùbhlachd
(mention)
→
Scottish Gaelic
bòrd-dubh
(affix)
→
Scottish Gaelic
ainleag-dhubh
(mention)
→
Scottish Gaelic
seillean-dubh
(compound)
→
Scottish Gaelic
sgian-dubh
(compound)