harmless adj.
VERBS appear, be, look, seem, sound | make sth, render sth chemical wastes which have to be rendered harmless | consider sth
ADV. absolutely, completely, perfectly, quite, totally | almost, virtually | enough He looks harmless enough. | comparatively, fairly, pretty, reasonably, relatively | apparently, seemingly a small and seemingly harmless creature | environmentally
PREP. to The substance is harmless to people.
You can also check other dicts: harmless (English, 中文解释 ), wordnet sense, Collins Definition