without the power or desire to do harm; innocuous: He looks mean but he's harmless; a harmless Halloween prank.
without injury; unhurt; unharmed.
hold harmless, Law.
to relieve from responsibility or liability
for any damage or loss. Also, save harmless.
Origin: 1250–1300; Related forms
Middle English. See harm
1. inoffensive, mild, innocent, unobjectionable, benign.