As one Definition 1 of 2Pro Tip 1/3Group Unity Use 'as one' to emphasize a strong sense of unity or solidarity among a group. We will face these challenges as one. Pro Tip 2/3Shared Response Illustrates when a collective group has the same reaction or response to a situation. The audience gasped as one at the breathtaking stunt. Pro Tip 3/3Emotional Impact Highlights a moment of profound collective emotion or experience. The soldiers saluted as one, honoring their fallen comrade.