What is another word for "harmless"?

Roget's Thesaurus (1911) lists these synonyms for "harmless": above, acquit, against, agree, air, artless, assimilate, babe, benign, blameless, bloodless, bracing, clean, clear, climate, conscience, culpa, curia, dove, eudiometer, exculpate, faultless, fine, for, good, guiltless, guilty, health, healthful, healthiness, healthy, hygeian, hygiene, hygienic, immaculate, impeccability, incorruption, inculpable, inerrable, innocence.