Pronunciation: [bˌʌt ɒv kˈɔːs] (IPA) 
The phrase "but of course" is spelled with the consonant "t" in the word "but" and the consonant "f" in the word "of". This is because "but" begins with the voiced alveolar stop /b/ and "of" begins with the voiceless labiodental fricative /ɒf/. The difference in the voicing of the two consonants means that they are pronounced differently and thus spelled differently. The phrase is pronounced /bʌt əv kɔːs/.
"But of course" is a phrase of English origin that is used to express agreement or affirmation towards something that may seem obvious or widely accepted. It is an idiomatic expression typically used in informal conversation or to emphasize a point.
The phrase "but of course" is often employed as a response to an inquiry or statement, indicating the speaker's agreement or acknowledgement of an expected outcome or situation. It conveys an understanding that the information being discussed is not only logical, but also widely understood or accepted among the individuals involved in the conversation.
The use of the word "but" in this phrase is not meant to introduce any contradiction or opposition to the statement at hand, but rather to provide an added emphasis or to indicate that the affirmation is a logical deduction or expected response to the topic being discussed.
This phrase is commonly used in English-speaking cultures to affirm a shared understanding or to highlight the obviousness of a concept or idea. Its usage helps to convey a sense of agreement among participants in a conversation, while also acknowledging and reinforcing the validity of the point being made.
