insomuch as
The whole plain was filled with hideous noise, insomuch that the Romans were not a little afraid.
She had a mortal aversion to the word "business", insomuch that she had long banished it from her vocabulary.
All his vital and intellectual force seemed to desert him, insomuch that he positively withered up, shrivelled away and almost vanished from mortal sight.

SMART Vocabulary: related words and phrases

Linguistics: connecting words which introduce a cause or reason
as
at
because
case
courtesy
cuz
dint
due
except
except thatidiom
herein
inasmuch as
insofar as
light
necessarily
now
since
that
view
virtue