Where does “multitaskaus” come from?

multitaskaus (Finnish) comes from Finnish multitaskata, from English multitask, from English task, from Medieval Latin tasca, from Latin taxa, from Latin taxāre, from Latin Taxus, from Ancient Greek εἶδος — to see, to look, to observe.

Ancestry of “multitaskaus”, step by step

multitaskaus traces back through two separate lines of ancestry.

via Finnish multitaskata

Step	Language	Word	Meaning
1	Finnish	multitaskata	to multitask
2	English	multitask	Handling or involving multiple tasks at once
3	English	task	A piece of work done as part of one’s duties; Any...
4	Medieval Latin	tasca	—
5	Latin	taxa	second-person singular present active imperative...
6	Latin	taxāre	—
7	Latin	Taxus	yew
8	Ancient Greek	εἶδος	That which is seen: form, image, shape;...
9	Spanish	-scopio	-scope
10	Latin	-scopium	—
11	Ancient Greek	σκοπέω	I look, look at, behold; I examine, inspect; 413...
12	Ancient Greek	σκοπός	watcher, lookout; protector, guardian; spy, scout
13	Ancient Greek	σκέπτομαι	I look at, examine; I examine, consider, think
14	Proto-Hellenic	sképťomai	to look at
15	Proto-Indo-European	spéḱyeti	to be looking at, to keep looking at
16	Proto-Indo-European	speḱ-	to see, to look, to observe

via Finnish us

Step	Language	Word	Meaning
1	Finnish	us	-ing

Every word from Proto-Indo-European speḱ- →Every word from Proto-Indo-European spéḱyeti →Every word from Proto-Hellenic sképťomai →