This was and has continued to be a safe topic.

She changed her mind at the last moment, retreating to a safer topic.

They talked about their patient after that, a nice safe topic which took them through lunch and out into the sunshine again.

It was a safe topic, she thought, and an expected one.

For her next book, she has chosen a nice, safe topic: the effect on community groups of having a place to meet.

Seeking a safe topic of conversation, she said, "Have you had a busy day?"

With that, the conversation turned to safe and meaningless topics.

He wanted to change the subject, but after so long he wasn't sure if there were any safe topics left.

He knew the answer, but at least it was a safe topic to continue their conversation.

Home and family were usually safe topics, at least with humans.