The word "worser" is often used in informal settings, but is not considered proper English. Instead, words such as "worse," "inferior," "substandard," and "deficient" may be used to convey the same meaning. Other synonyms include "less favorable," "lesser," and "weaker." It's important to note that using proper grammar and vocabulary can improve communication, as it ensures clarity and comprehension for the listener or reader. While slang and colloquialisms may seem more relatable in some situations, it's always best to use language that is widely understood in order to avoid confusion.