1. causing harm, ruin, or death; destructive
Usage: formal

Examples

• The baneful effects of pollution on marine life are becoming increasingly evident.
• His baneful influence on the team’s morale was obvious to everyone.
• The dictator’s baneful policies led to widespread poverty and suffering.
• She warned against the baneful consequences of ignoring climate change.
• The baneful habit of smoking has serious health implications.
• Ancient texts describe the baneful power of certain curses.