Plainly
look up a word, understand it — no rabbit hole
xenophobia
nounzen-uh-FOH-bee-uh
meaning in plain English
Think of a person who gets nervous and angry whenever someone from a different country shows up. That feeling is called xenophobia.
Think xeno = foreign, phobia = fear — xenophobia is the fear of strangers.
for example
His xenophobia made him refuse to sit next to the exchange student in the cafeteria.
In other words, xenophobia is the gut reaction that tells you to keep strangers at arm's length, even when they just want to be friendly. It’s the kind of fear that can turn a simple hello into a cold shoulder.