innocuous

Harmless; producing no ill effect.

• With its green cupola or tapering spire, / Which sunset touches with innocuous fire, / The little church appears, to sanctify / The precincts duly where men live and die— [...]
• The shells fell for the most part innocuous; an eyewitness saw children at play beside the flaming houses; not a soul was injured.

Inoffensive; unprovocative; unexceptionable.

• Ruth Devlin announced that the song must wait, though it appeared to be innocuous and child-like in its sentiments.
• He sat down, and lighted a cigarette, casting about the while for an innocuous topic of conversation.