Stumble into Definition 1 of 3Pro Tip 1/3Unexpected Discovery Use 'stumble into' when something good is found without looking for it. On our trip, we stumbled into a charming little bakery. Pro Tip 2/3Positive Surprises 'Stumble into' often portrays a positive outcome from an unplanned event. I stumbled into an amazing opportunity at the conference. Pro Tip 3/3Idiomatic Usage The phrase can be metaphorical, not just about physical movement. She stumbled into a new hobby that she loves.