W5

The five questions starting with W, "who, what, where, when, and why," referring to the most essential details of a given topic. Usually used in the context of instructions and advice about writing, particularly journalistic writing. Whenever you're drafting business emails, always try to ask yourself the W5 questions about what you're writing to make sure you're including all the information you need. If you're ever at a loss for what to ask someone you're interviewing, start with the W5 questions and expand from there.

An abbreviation of "which was what was wanted," used as a slightly humorous ending to a mathematical proof. Sometimes written as "W5" in imitation of W being raised to the power of five. My professor in college said she always hated putting QED at the end of proofs because it sounded too pretentious. She always put W5 at the end of hers instead. I cheekily put W5 at the end of the proof, expecting it to rile up the teacher. So I was surprised when he wrote "ha ha" next to it and gave me an extra point.