"Roughly" is an adverb often used to describe an approximate or estimated value or situation. There are several synonyms for "roughly" that can be used to convey the same meaning. For example, the term "approximately" can be used to indicate an estimated value or quantity without being precise. "Loosely" can also be used to describe something that is not exact or rigid. "Rudimentarily" can be similarly employed to indicate a basic or fundamental approach to a situation. Additionally, "vaguely" can be used to describe something that is not clearly defined or specific, but rather ambiguous. Other synonyms include "generally", "broadly" and "about".