diez
/ˈdjeθ/ · A2 · num
ten
🔟 diez ← Latin decem: same root as decimal, decade, December
Latin decem wore down to diez in Spanish (the short e broke into ie, the ending softened to z). English kept the root in decimal and decade. A diez is also the top mark on Spain's 0-10 grading scale, like an A.