Pronunciation: [ɪz ˈɒf] (IPA) 
The spelling of the phrase "is off" is somewhat straightforward in English orthography. The first word, "is," is spelled with the /ɪz/ phoneme, which is commonly written as "i-s." The second word, "off," is spelled with the /ɒf/ phoneme, which can also be written as "aw-f." Together, the phrase is pronounced as /ɪz ɒf/ and commonly used to describe something that is not correct or accurate.
The phrase "is off" is a colloquial expression that signifies a state of being absent, unavailable, or not in accordance with expectations or plans. It is commonly used to describe an individual who is not present or not in their usual location, such as a workplace, school, or social gathering. Additionally, it can indicate that someone is not fulfilling their responsibilities or duties.
In informal contexts, "is off" can signify the cancellation or rescheduling of an event, appointment, or arrangement. It suggests that the original plan or commitment is no longer valid or possible. This phrase is often used to inform others that a specific activity or engagement will not take place as intended.
Furthermore, "is off" can imply that something is malfunctioning or not operating as expected. For instance, if an electronic device or piece of equipment is said to be "off," it denotes that it is not functioning or powered on properly.
Overall, the expression "is off" conveys a sense of absence, cancellation, unavailability, or malfunctioning, depending on the context in which it is used. It is a versatile phrase that is commonly utilized in social, professional, and daily conversational settings.
The phrase "is off" does not have a specific etymology of its own because it is composed of two separate words with distinct origins. However, we can briefly look at the etymology of each word:
1. "Is": The word "is" is the third person singular present tense of the verb "be" in English. It comes from the Old English word "is", which can be traced back to the Proto-Germanic word "esmi" meaning "I am". The word "be" itself has Indo-European roots and can be traced back to the Proto-Indo-European root "*bʰuH-" meaning "to become, grow, exist".
2. "Off": The word "off" comes from the Old English word "of" or "off" which means "away, from, down, down from".
