Inoffensive (adjective) — غير مُؤذي: Not likely to upset or annoy anyone. Below are 8 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Gentle; not severe or extreme.
Not harmful or offensive.
Modest and not drawing attention to oneself.
Satisfactory and good enough to be approved; meeting a minimum standard of quality, accuracy, or behavior — adequate though not necessarily excellent
harmlessunobjectionablegentlebland