six-year-old
UK: ˌsɪks ˈjɪər əʊld | US: ˌsɪks ˈjɪr oʊld
adj. describing someone or something that is six years in age
n. a person or animal that is six years old
The term "six-year-old" is a straightforward compound adjective/noun formed by combining the cardinal number "six," the unit of time "year," and the adjective "old." This structure follows a common English pattern for indicating age (e.g., "ten-year-old," "two-month-old"). The morphemes retain their original meanings without phonetic or spelling alterations. Historically, such compounds emerged as a concise way to describe age without using possessive or prepositional phrases (e.g., "a child of six years").
The six-year-old proudly showed her artwork to the class.
We adopted a six-year-old dog from the shelter.
This book is perfect for a six-year-old learning to read.
The six-year-old tree finally bore fruit this summer.
As a six-year-old, he was already fascinated by dinosaurs.