WSO, or Web Special Offer, relates to a limited-time discount or deal available online. Some synonyms for this term include online promotion, digital offer, exclusive deal, web discount, and virtual special offer. Other similar words that can be used in place of WSO include flash sale, online sale, website deal, internet bargain, and cyber special. These synonyms are commonly used in the marketing arena to entice customers to buy a particular product or service through a special promotion or discount. Regardless of the terminology used, the goal is to boost sales and generate buzz around a product through a targeted online offer.