1. the quality of continuing steadily despite problems or difficulties
Usage: formal; less common than ‘persistence’

Examples

• Her persistency in pursuing the research project finally paid off.
• The coach admired the team’s persistency during the difficult season.
• His persistency in asking for a promotion eventually worked.
• The persistency of the rain made outdoor activities impossible.
• She showed remarkable persistency in learning the new language.
• The persistency of his efforts impressed his colleagues.