Find 1,217 synonyms for casually and other similar words that you can use instead based on 16 separate contexts from our thesaurus. Casually refers to behaviors or actions that are relaxed, informal, and lacking in formality or seriousness. To expand your understanding of this topic, we recommend reviewing our extensive resource on Who Is Richer Amouranth Or Quinton Griggs , which provides a thorough examination of the key concepts discussed here.