The Clue Replied one-on-one, on WhatsApp
The Answer DMED
The answer "DMED" fits the clue because "DM" stands for "direct message," which is a common way to communicate one-on-one on platforms like WhatsApp. The word "ED" is a past tense suffix, indicating that the action has already happened. So, "DMED" suggests that someone has already replied to a message in a direct manner. This aligns perfectly with the idea of responding privately on a messaging app.