Where does “really” come from?

I appreciate the detailed instructions, but I notice the chain provided appears to trace words like "ally," "alley," and "alabaster" rather than "really." Could you verify the etymology chain for "really"? If you'd like me to write the origin summary for "really," I'll need the correct chain showing how it developed from its oldest source through intermediate languages to modern English.

really (English): In a way or manner that is real, not unreal;...

Definitions

  1. In a way or manner that is real, not unreal;...

Ancestry of “really”, step by step

really traces back through two separate lines of ancestry.

via English ally

StepLanguageWordMeaning
1EnglishallyTo unite, or form a connection between, as...
2Middle EnglishallieThe state of having marital or family relations...
3Middle EnglishallienTo ally; to make a pact or confederacy; To marry...
4Old Frenchalierto unite; to join together
5Latinalligōto bind to, up or around something, tie, fetter, fasten; bandage
6Latinad-to; usually prefixed to verbs, in which cases it...
7Latinīn-un-, non-, not
8Latinînin, at, on, upon, from (space)
9Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
10Proto-Italicenin
11Proto-Indo-Europeanh₁énin

via Middle English really

StepLanguageWordMeaning
1Middle Englishreally

Words derived from “really

Every word from Proto-Indo-European h₁én
really — Etymology, Origin & Word History | Etymology Explorer