IPA: /pərˈsɪstənt/
KK: /pərˈsɪstənt/
The quality of continuing to do something despite difficulties or opposition.
Her persistency in studying for the exam paid off when she received a high score.
Persistency → It is formed from "per-" (meaning through) and "sistere" (meaning to stand). The word describes the quality of standing firm or continuing steadfastly through challenges.
Think of standing 'through' ('per-') difficulties — that's why persistency means the quality of continuing steadfastly.