"Nose in the air" refers to the act of being arrogant or haughty. It is a phrase used to describe someone who portrays themselves as being superior to others. There are many synonyms for this phrase, including "snobbish," "conceited," "uppity," "pretentious," "self-important," and "high-handed." Each of these words has its unique connotations and implications, but they all share similar meanings to "nose in the air." When used in conversation or writing, these synonyms allow for a more diverse range of expression and can help to convey a clearer message to the audience.