Palestine comes from no known root in Arabic, it has absolutely no Arabic meaning or origin. Even in its Arabic form, philastin, it’s just pronouncing with an Arabic intonation a word which came from another language.
That language happens to be Latin and the name Arabs took their Arabized form from is Palestina.
After the Jewish-Roman war of 66-73 (yes, Jews, not Arab Muslims), the Romans thought they were done with the ‘Jewish problem’ until a new rebellion started in 132 and ended in 135 with the complete destruction of the Jewish resistance at the hands of Emperor Hadrian.
He understood that as long as Jews would long for their homeland, they would be trouble for the Roman Empire and the way to cut the bond between the Jews and their land was by changing its name and the name of the towns that held a deep meaning for Jews.
He renamed Judea and Galilee: Syria-Palestina and renamed Jerusalem: Aelia Capitolina.
He did not choose the name Palestina at random.
He knew that until the time of King David, the Children of Israel main enemies were the Philistines, a group of white European seafarers who came from the Aegean Sea (probably the island of Crete).
They formed on the south western shore of Israel a narrow strip of land (sound familiar?) which contained 5 city states: Rafah, Gaza, Ashkelon, Ashdod and Gath.
The Hebrews called them Phelishtim (hence the Anglicized Philistines) from the Hebrew root PH L SH which forms the verb Liphlosh or to invade.
Basically, Phelishtim (philistines) means invaders.
So, this is the name that Emperor Hadrian chose, knowing full well the deep animosity and hatred there had been in the past between the Jews and the Philistines.
Palestine is therefore a name used by anyone who whishes to erase the Jewish history and culture of this land.
It is an act of anti-semitism.