Speakeasies were illegal establishments that operated in the United States during the Prohibition era (1920-1933). They offered a place where people could drink alcohol, which was banned at the time. There are several synonyms for the word 'speakeasies' due to its historical connotation and relevance, including blind pig, blind tiger, juice joint, gin mill, rum hole, and clip joint. These synonyms were coined by the establishments themselves to send coded messages to their customers about their illegal services. However, the term 'speakeasy' remains the most popular and recognizable synonym for these illegal establishments to date.