Translation of "Unfriendly" in Spanish

You're unfriendly.

Eres hostil.

He's rich, though unfriendly.

Él es rico, sin embargo antipático.

The teacher is unfriendly.

El maestro es antipático.

- Tom is unfriendly.
- Tom isn't friendly.

Tom no es amistoso.

And suddenly gets quite unfriendly, even a little aggressive.

y me empieza a hablar de forma muy desagradable y hostil.

Mary looks unfriendly, but she is really very kind at heart.

Mary no parece agradable, pero es de naturaleza gentil.