unthreatening

/ʌnˈθrɛtənɪŋ/
adjective
  1. Not likely to cause harm, danger, or fear; safe and friendly in appearance or manner.
    • She chose an unthreatening topic of conversation to avoid any arguments.
    • The small, unthreatening waves made it a perfect day for beginner surfers.
    • The dog had a gentle, unthreatening expression that put everyone at ease.