Where does “anarcossindicalista” come from?

anarcossindicalista (Portuguese) comes from Spanish sindicalista, from Portuguese sindical, from Spanish síndico, from Latin syndicus, from French syndicat, from French syndic, from Late Latin syndicus, from Ancient Greek σύνδικος — beside, with.

anarcossindicalista (Portuguese): anarcho-syndicalist relating to or advocating anarcho-syndicalism

Definitions

anarcho-syndicalist relating to or advocating anarcho-syndicalism

Ancestry of “anarcossindicalista”, step by step

Step	Language	Word	Meaning
1	Spanish	sindicalista	trade-union; trades unionist
2	Portuguese	sindical	syndical
3	Spanish	síndico	receiver; syndic
4	Latin	syndicus	A representative of a corporation; syndic
5	French	syndicat	syndicate; union, trade union
6	French	syndic	a syndic
7	Late Latin	syndicus	representative of a corporation or town, syndic;...
8	Ancient Greek	σύνδικος	advocate of a defendant; advocate for a...
9	Ancient Greek	σῠν-	together; with, together
10	Ancient Greek	σύν	beside, with
11	Proto-Hellenic	*ksún	beside, with

Every word from Proto-Hellenic *ksún →Every word from Ancient Greek σῠν- →Every word from Ancient Greek σύν →