Pronunciation: [ɒv sˈʌbstəns] (IPA) 
The phrase "of substance" is often spelled as expected, with the pronunciation of /ʌv ˈsʌbstəns/. The first sound, /ʌ/, is a short vowel that is common in English words such as "up" and "hut." The second part of the word, "/ˈsʌbstəns/," indicates that the vowel sound changes to a short u. The final sound, /s/, is an unvoiced consonant that is made by hissing air out of the mouth without using the vocal cords.
Of substance refers to something that possesses significance, importance, or merit. It indicates that the subject under consideration has a considerable amount of relevance or substance that holds value or weight. This term is often used to distinguish between matters or individuals that are substantial and those that are trivial or insignificant.
When describing a person as "of substance," it implies that they are someone who has substantial qualities or achievements which make them worthy of respect or attention. These individuals are often seen as credible, knowledgeable, and influential within their respective fields or areas of expertise.
In the context of discussions or debates, an argument or point can be described as "of substance" if it is well-founded and supported by evidence or logical reasoning. This indicates that the argument is meaningful and significant, carrying enough weight to be considered credible and worth considering.
The term "of substance" can also denote something that is tangible or physical. In this sense, it refers to something that has actual matter or corporeal presence, rather than being abstract or imaginary.
Overall, "of substance" emphasizes that the subject being discussed is of importance, value, or significance, and holds a position of significance within the context in which it is being used.
The word "substance" comes from the Latin word "substantia", which means "essence" or "essential nature". It is derived from the verb "substare", which combines "sub" (under) and "stare" (to stand). Over time, "substantia" evolved into Old French as "substence" before entering Middle English as "substaunce" and later becoming the Modern English "substance". The phrase "of substance" combines the preposition "of" and the noun "substance" to convey the idea of something being important, meaningful, or significant.
