Pronunciation: [ˌʌp wˈɔːl] (IPA) 
The spelling of the word "up wall" can be a bit confusing because of its pronunciation. Using the International Phonetic Alphabet (IPA), the correct pronunciation is /ʌp wɔl/. The first syllable "up" is pronounced with a short "u" sound followed by the consonant "p". The second syllable "wall" is pronounced with an "aw" sound followed by the consonant "l". As for the spelling, it is simply the combination of the words "up" and "wall".
"Up wall" is an idiomatic expression typically used in informal contexts. This phrase is commonly used in British English and signifies a state of extreme annoyance, frustration, or agitation. The phrase implies that one's emotions have reached a level in which they feel as if they are metaphorically climbing up a wall out of sheer exasperation.
When someone says they are "up wall," they are indicating that a situation or circumstance is irking, irritating, or overwhelming them to the point of exasperation. The phrase may also convey a sense of feeling trapped or cornered, leading to heightened frustration and annoyance. It is often employed to describe instances when someone is annoyed or overwhelmed by a persistent problem, a difficult person, or a challenging situation.
The term "up wall" is derived from the literal act of climbing a wall, which signifies the effort, struggle, and discomfort associated with such a physical task. In the same way, being "up wall" mentally or emotionally illustrates the overcoming or surmounting of personal challenges or obstacles.
Overall, the phrase "up wall" is used to convey a feeling of intense frustration or exasperation in response to a persistent problem or challenging situation, often resulting in a sense of being overwhelmed or cornered.
