Pronunciation: [mˈɔː ɡɹˈe͡ɪ hˈe͡əd] (IPA) 
The correct spelling of the term "more gray haired" can sometimes be confusing. The phonetic transcription of this word is /mɔːr ɡreɪ heəd/. The "a" in "gray" is pronounced as "ey" sound. The extra "e" in "haired" is silent, and it is used to indicate the correct pronunciation of "air" as "eə" sound. When using this term, make sure to spell it correctly to avoid any misunderstandings or confusion.
The phrase "more gray-haired" refers to an individual who has a greater amount of gray hair compared to a previous state or compared to others. Typically, the term "gray-haired" is used metaphorically to describe someone who is elderly or aging, as gray hair is commonly associated with the natural process of hair turning gray as a person gets older.
In a literal sense, "more gray-haired" indicates that a person's hair has undergone an increase in the amount of gray strands present. This can occur due to aging, genetics, or various external factors like stress. The phrase can be used as a descriptive term for someone whose hair has become progressively grayer over time.
However, it is important to note that the term "more gray-haired" is often employed metaphorically to imply increased wisdom, experience, or maturity. This metaphorical usage recognizes the societal notion that gray hair is associated with older age and the accumulation of life experiences. It may be used to describe someone who appears older or wiser than they previously did, or to imply that they possess traits commonly associated with age, such as wisdom, composure, or authority.
Overall, the phrase "more gray-haired" encompasses both the literal and metaphorical aspects of hair turning gray, either signifying an increase in the number of gray hairs or referring to the associated connotations of aging and experience.
