Indicates a struggle or contest spanned a significant period before the winner emerged. The negotiations were tough, but common sense won out after weeks of discussion.
Pro Tip 2/3
Metaphoric usage
Can be used to personify abstract concepts as contenders in a struggle where one prevails. In his heart, empathy won out over anger.
Pro Tip 3/3
Positive connotation
Often suggests a desirable or favorable outcome in the end. After many failures, her determination to succeed won out.