The story
- Middle English · inherited fromin als mikel
- English todayinasmuch
Univerbation of in + as + much ("to such a degree"), from Middle English in als mikel, a Northern form.
First known use, by meaning
- 14ᵗʰ c. In like degree; in like manner; to the same or similar degree; likewise.
Etymology from Wiktionary, CC BY-SA 4.0.