Hi. This is the entry I got when I looked up the word "extraneous" on naver.com's dictionary.
Extraneous things
are not relevant or essential to the situation you are involved in or the subject you are talking
about.[
FORMAL ]
I think we can put the word "that" between the words "situation" and "you." Can we rewrite it like this? Please look at the underlined part.
Extraneous things
are not relevant or essential to the situation in which you are involved or the subject you are talking
about.[
FORMAL ]