persistency
- n persistent determination
- The secretary's persistency enraged him.
- He aimed at President Coolidge; and President Coolidge sat as immobile as a sphinx, repeating with the persistency of Poe's raven: "Economy and more economy.
- There were at his disposal very limited financial means and but a few simple tools, but there were also at his disposal pluck, resourcefulness, persistency, love of his work and .