Whoa/wəʊ/ Definition 1 of 2Pro Tip 1/3Informal Usage Used in casual conversations among friends, not in formal settings. Whoa, that was a cool trick, dude! Pro Tip 2/3Emotional Emphasis Expresses strong emotions like excitement, shock, or disbelief. Whoa, I can't believe we won the game! Pro Tip 3/3Signal for Attention Grabs the listener's attention before important information is shared. Whoa, listen to this! I've got some big news.