IPA: /nɒnˈhɒstaɪl/
KK: /nɑnˈhɑstəl/
Not aggressive or unfriendly; showing kindness or a lack of hostility.
The two countries maintained a nonhostile relationship despite their differences.
Nonhostile → It is formed from "non-" (meaning not) and "hostilis" (from Latin, meaning hostile or enemy). The word "nonhostile" means not hostile or unfriendly.
Think of 'not' ('non-') being combined with 'hostile' to remember that 'nonhostile' means not being unfriendly.