This is a small question with a big answer, and the answer is no. Excel does not support a "not" operator in its filter search bar, so typing `!5` will never work. The real story here is not about a missing feature, it is about a fundamental limit in how traditional spreadsheets think.
The user who posted this question knows exactly what they want. They have a list of product numbers, and they want to exclude every entry that starts with "5." That is a clear, logical instruction. In an AI-native spreadsheet, you would simply type that intent, something like "exclude rows where product number starts with 5", and the tool would understand. Excel, however, requires you to translate that intent into a formula, a helper column, or a multi-step workaround. The user tried to use `!5` because it felt natural. That instinct was correct. The tool was not.
This is the frustration that drives people away from traditional spreadsheets. The user is not asking for something complex. They are not trying to build a financial model or run a regression. They simply want to filter out data they do not need. And yet, the tool forces them to stop their workflow, learn a formula, and add an extra column. Every time a user has to do that, they lose momentum. Every time they search for a workaround, they lose confidence. The spreadsheet becomes a barrier instead of a bridge.
What this means for you is practical. If you have ever felt that nagging friction, where a simple idea takes three steps to execute, you are not alone, and you are not the problem. The problem is that traditional spreadsheets were designed for a world where data was static and formulas were the only way to manipulate it. That world is outdated. AI-native spreadsheets are being built to understand natural language, to recognize patterns, and to let you express what you want without translating it into a syntax that only the machine speaks. The question "Is there something else I can write in the search bar?" is the right question. The answer should be yes, and soon it will be. For now, the honest answer is that you need a formula. But the honest takeaway is that you should expect more from your tools.