Dear UJM,
No offense intended, sir.
But with all due respect, you are the living personification
of Sinas Chinam (in addition to your amazingly wicked record of:
Lashon HaRa, Motzi Shem Ra, super-machlokes, laitanus,
onaas devarim, and being a super-rodaif & a super-mosair.)
I did NOT intend to say those things about you,
but when you asked, I felt obligated to answer your question.
Since you asked, you have nobody to blame but yourself
about the fact that I answered your question. Sorry about that.
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Getting back to your question about:
What is the definition of Sinas Chinam?
________________________________________________________________________
Rabbi Binny Freedman said:
The Talmud tells us that the second Temple was destroyed
through blind, wanton hatred, or sinat chinam.
It is difficult to understand how any hatred can ever be chinam,
which seems to mean “for no reason at all.”
The Netziv suggests that this wanton hatred refers to
disliking or even detesting someone because their views are different.
SOURCE: article titled: “Jewish people have a different set of priorities”
by Rabbi Binny Freedman, 2022 July 13, www (dot) TheJewishStar (dot) com