1. without the power or desire to do harm; innocuous: He looks mean but he's harmless; a harmless Halloween prank.
2. without injury; unhurt; unharmed. Idioms
3. hold harmless, Law. to relieve from responsibility or liability for any damage or loss.Also, save harmless.
"viruses can be harmless at levels."
"virus useds can be harmless to humans."
"venoms can be harmless to people."
"venoms can be harmless to humans."
"types can be harmless to layers."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.