Here is a Navajo word that reflects the passage of time. It means “year” in reference to the complete passage of one year.

Preceded by a number, such as naadiin ła’ (21), nááhai becomes “years” and, in this case, would mean “(for) 20 21 years”.

Shinááhai is a way to saying “my years” as in “I am 21 years old” (naadiin ła’ shinááhai – 21 [are] my years). Change this to ninááhai or binááhai and you have “your years” or “his/her/its years”, respectively.

“Díkwíí-shą’ ninááhai?” “What about you – how much are your years?”