Where does “kauhuskenaario” come from?

kauhuskenaario (Finnish) comes from Finnish skenaario, from Italian scenario, from Italian scena, from Latin scaena, from Ancient Greek σκηνή, from Proto-Indo-European (s)ḱeh₃ih₂, from Proto-Indo-European (s)ḱeh₃- — darkness, shadow.

kauhuskenaario (Finnish): nightmare scenario, worst-case scenario

Definitions

nightmare scenario, worst-case scenario

Ancestry of “kauhuskenaario”, step by step

kauhuskenaario traces back through two separate lines of ancestry.

via Finnish skenaario

Step	Language	Word	Meaning
1	Finnish	skenaario	scenario
2	Italian	scenario	scenery, set; backdrop
3	Italian	scena	scene; stage
4	Latin	scaena	stage; scene; theatre
5	Ancient Greek	σκηνή	tent; stage
6	Proto-Indo-European	(s)ḱeh₃ih₂	shadow, shade
7	Proto-Indo-European	(s)ḱeh₃-	darkness, shadow

via Finnish kauhu

Step	Language	Word	Meaning
1	Finnish	kauhu	Horror, terror, dread
2	Finnish	-u	Forms nouns from verbs. Most common with "e"- and...
3	Proto-Finnic	-u	Forms nouns from adjectives, nouns

Every word from Proto-Indo-European (s)ḱeh₃- →