Where does “tagaktiv” come from?

tagaktiv (German) comes from German Aktiv, from French actif, from Old French actif, from Latin āctīvus, from Ancient Greek ἐνεργητικός, from Ancient Greek ἐνεργέω, from Ancient Greek ἐνεργός, from Ancient Greek ἐν- — Creates collective nouns, which refer to groups...

tagaktiv (German): diurnal

Definitions

diurnal

Ancestry of “tagaktiv”, step by step

tagaktiv traces back through two separate lines of ancestry.

via German Aktiv

Step	Language	Word	Meaning
1	German	Aktiv	active voice; active verb
2	French	actif	active; asset; top
3	Old French	actif	active
4	Latin	āctīvus	active
5	Ancient Greek	ἐνεργητικός	Able to act on; acting on; Active; In the active...
6	Ancient Greek	ἐνεργέω	to be in action or activity, to operate; to...
7	Ancient Greek	ἐνεργός	at work, active
8	Ancient Greek	ἐν-	in, within; on
9	Ancient Greek	ἐν	in, on, at; among; in, at, or during the time of
10	Ancient Greek	δέρμα	skin, hide
11	Ancient Greek	γλυφή	carving, carved work; hole cut
12	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
13	Proto-Indo-European	-íh₂	—
14	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

via German tag

Step	Language	Word	Meaning
1	German	tag	singular imperative of tagen
2	German	guten Tag	hello, good day, good afternoon
3	Alemannic German	Tag	day
4	Middle High German	tac	Alternative form of tag
5	Old High German	tag	day
6	Proto-West Germanic	dag	day
7	Proto-Germanic	dagaz	day; name of the D-rune
8	Proto-Indo-European	dʰegʷʰ-	to burn; warm, hot

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