1. Having no adverse effect

See also: innocuous

• Russification
• Russify
• Russo-
• Russo-Japanese War
• Russula
• Russulaceae
• rust
• rust fungus
• rust inhibitor
• rust mite
• rust-brown
• rust-colored
• rust-coloured
• rust-free
• rust-red
• rust-resistant
• Rustbelt
• rusted
• rustic
• rusticate
• rustication
• rusticism
• rusticity
• rustily
• rustiness