Where does “camfanteisio” come from?

camfanteisio (Welsh) comes from Welsh manteisio, from Welsh mantais, from English vantage, from Middle English vantage, from English advantage, from Middle English avantage, from Old French avantage, from Old French avant — Derives abstract/action nouns from verb roots.

camfanteisio (Welsh): to exploit, to abuse, to take advantage

Definitions

to exploit, to abuse, to take advantage

Ancestry of “camfanteisio”, step by step

Step	Language	Word	Meaning
1	Welsh	manteisio	to take advantage, to make use
2	Welsh	mantais	advantage
3	English	vantage	An advantage; A place or position affording a...
4	Middle English	vantage	—
5	English	advantage	Any condition, circumstance, opportunity or...
6	Middle English	avantage	—
7	Old French	avantage	advantage; profit; gain
8	Old French	avant	beforehand; earlier
9	Latin	ab ante	in front, before
10	Latin	ante	before, in front, forwards; before; before,...
11	Ancient Greek	κλίσις	bending, inclination; a lying down; a place for...
12	Ancient Greek	-σῐς	"suffix forming nouns"
13	Ancient Greek	-τις	retained after dentals
14	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek κλίσις →