The word "beefinesses" is a noun that refers to the quality of being beefy or muscular. It is spelled with three syllables: beef-i-ness-es /ˈbiːfɪnəsɪz/. The first syllable is pronounced like the word "beef," with a long /i/ vowel sound. The second syllable has a short /i/ vowel sound and is pronounced like the word "if." The third and fourth syllables both end with the plural marker "-es," which is pronounced like /ɪz/. The word "beefinesses" is not commonly used in everyday conversation, but it may be found in specialized contexts such as bodybuilding or fitness discussions.