Qui persévère.
ETYM Fron. Dog.
1. Sullen; morose.
2. Sullenly obstinate; obstinately determined or persistent.
ETYM Latin tenax, -acis, from tenere to hold. Related to Tenable, Tenace.
1. Holding fast, or inclined to hold fast; inclined to retain what is in possession.
2. Apt to retain; retentive.
3. Holding stoutly to one's opinion or purpose; obstinate; stubborn.
4. Grasping firmly; clinging closely; not quickly relinquishing or forgetting.