ten-year-old
UK: ˌten ˈjɪər əʊld | US: ˌten ˈjɪr oʊld
adj. being of the age of ten years
n. a person or animal that is ten years of age
The term "ten-year-old" is a straightforward compound adjective/noun formed by combining "ten" (from Old English "tīen"), "year" (from Old English "ġēar"), and "old" (from Old English "eald"). It follows a common English pattern for age descriptors, where a numeral is paired with "year" and "old" to denote specific age. This structure is logical and transparent, reflecting the Germanic roots of English numerical and temporal expressions.
My ten-year-old brother loves playing soccer.
The shelter adopted out a ten-year-old dog last week.
She wrote her first novel when she was a ten-year-old.
The museum offers free admission for ten-year-olds.
This book is perfect for a ten-year-old who enjoys adventure stories.