Where does “anancastico” come from?

anancastico (Italian) comes from Italian anancasmo, from Ancient Greek ἀναγκασμός, from Ancient Greek ἀναγκάζω, from Ancient Greek Ἀνάγκη, from Proto-Indo-European h₂neḱ- — to reach, to attain.

anancastico (Italian): obsessive

Definitions

obsessive

Ancestry of “anancastico”, step by step

anancastico traces back through two separate lines of ancestry.

via Italian anancasmo

Step	Language	Word	Meaning
1	Italian	anancasmo	obsession
2	Ancient Greek	ἀναγκασμός	—
3	Ancient Greek	ἀναγκάζω	I force
4	Ancient Greek	Ἀνάγκη	Fate
5	Proto-Indo-European	h₂neḱ-	to reach, to attain

via Ancient Greek ἀναγκαστικός

Step	Language	Word	Meaning
1	Ancient Greek	ἀναγκαστικός	—
2	Ancient Greek	ἀνάγκη	force; constraint; necessity

Every word from Proto-Indo-European h₂neḱ- →Every word from Ancient Greek Ἀνάγκη →Every word from Ancient Greek ἀναγκάζω →