Where does “параноик” come from?

параноик (Serbo-Croatian) comes from Serbo-Croatian парано́ја, from Ancient Greek παράνοια, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

параноик (Serbo-Croatian): paranoid, paranoiac

Definitions

paranoid, paranoiac

Ancestry of “параноик”, step by step

Step	Language	Word	Meaning
1	Serbo-Croatian	парано́ја	paranoia
2	Ancient Greek	παράνοια	derangement, madness
3	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
4	Proto-Indo-European	-íh₂	—
5	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek παράνοια →