There are many different words that can be used as synonyms for "at a desired level." Some of these words include "adequate," "proper," "sufficient," "appropriate," "suitable," "acceptable," "effective," and "efficient." Each of these terms can be used to describe something that is performing at the level that is expected or required, whether it is a person, a system, or an object. By using these synonyms, you can increase the variety and richness of your language, conveying your message in a more precise and effective way. Whether you are writing a report, giving a presentation, or simply chatting with friends, these synonyms will help you to express yourself more clearly and convincingly.