Door-to-door (adverb)

1. From one house or building to another in a particular area or neighborhood.
2. Delivering or selling goods or services in this way.

Origin:

Phrase from the early 19th century, from the practice of selling or canvassing from house to house.

Examples:

1. The salesperson went door-to-door in the neighborhood trying to sell the vacuum cleaner.
2. The charity organization went door-to-door asking for donations.
3. The political candidate went door-to-door campaigning for votes.
4. The delivery service offered door-to-door service for packages.
5. The census taker went door-to-door collecting data for the survey.