Something People Are Afraid Of with X

• Xenophobia

  A real phobia: fear of strangers/foreigners.

• X-rays

  Many people fear X-rays and radiation exposure.

• X-men

  Many fear dangerous mutants in the X‑Men stories

• Xenophobes

  People can fear xenophobes and their hostility

The words in the list Something People Are Afraid Of with X come from players of the word game City, Country, River.