Answer :
Final answer:
The word in question is 'consummate,' which when pronounced CON-sum-mate means to complete a marriage, and con-SUM-mate refers to someone being supremely skilled.
Explanation:
The 3-syllable word that changes meaning based on its pronunciation is 'consummate.' When pronounced CON-sum-mate, it refers to the act of making a marriage complete, usually through the wedding ceremony or the consummation of the marriage. When pronounced con-SUM-mate, it refers to someone being supremely skilled or accomplished in a particular field.
In English, the word 'consummate' has two distinct pronunciations which lead to two different meanings. The word derives from Latin where 'consummare' means to sum up or complete. The pronunciation CON-sum-mate (with the stress on the first syllable) is used when speaking of fulfilling or completing the acts required to validate a marriage. This traditional sense can be seen in the historical context and legal discussions surrounding the institution of marriage.
On the other hand, when the stress is shifted to the second syllable, making it con-SUM-mate, the meaning shifts significantly. In this case, it refers to a person who has reached a level of excellence or perfection in their skills or art. This usage commonly appears in literary contexts or when describing someone's proficiency in a given domain. These two definitions showcase the nuanced richness of English vocabulary, where not only the spelling and context but also the pronunciation can entirely change the perceived meaning of a word.