Pronunciation: [mˌe͡ɪkɪŋ ˈɒf tˈɒp ɒv hˈɛd] (IPA) 
The phrase "making off top of head" refers to improvising or coming up with something on the spot without prior planning. In terms of its spelling, "making" is transcribed as /ˈmeɪ.kɪŋ/ and "off" as /ɒf/. "Top" is pronounced as /tɒp/, and "of" is /əv/. "Head" is /hɛd/. So, the word is spelled as "m-a-k-i-n-g o-f-f t-o-p o-f h-e-a-d" and pronounced as /ˈmeɪ.kɪŋ ɒf tɒp əv hɛd/.
The phrase "making off the top of one's head" refers to the act of creating or inventing something quickly and without much thought or preparation. It often refers to spontaneously coming up with an idea, solution, or response without relying on prior knowledge or research.
When someone "makes off the top of their head," it means that they are providing an answer or solution based solely on their immediate thoughts, instincts, or intuition. It implies that the person is not relying on any in-depth analysis or careful consideration but is rather giving a quick and rough estimate or guess.
This phrase is commonly used in informal conversations or discussions, and conveys a sense of informality or spontaneity. It suggests that the person speaking is not concerned with being precise or accurate, but rather is offering a quick and impromptu response.
While "making off the top of one's head" can sometimes be useful in situations that require immediate thinking or brainstorming, it is important to note that the results may not always be reliable or accurate. Since the person is not taking the time to thoroughly research or analyze the subject matter, their response may be based on limited information or personal biases.
