innocuous

adjective
1
not intended or likely to offend or upset anyone
بی‌ضرر, بی‌آزار, بی‌خطر, ملایم
synonym harmless(2)
2
not harmful or dangerous
بی‌ضرر, بی‌خطر, غیر مضر, بی‌زیان
an innocuous substance
synonym harmless(1)