Question

what is the word that you will search in the dictionary to find the meaning from door to door in one word

Answer 1

Door-to-door refers to journeys or deliveries direct from point of origin to the point of destination.

The cargo offers door-to-door service.

OR

The Taxi Company offers door-to-door service.

It also refers to leaving no one. It means from one house to the other house.

For example, during elections we can see door-to-door campaign from the candidates.

So a single word that substitutes door-to-door is 'direct'

Another word that is equivalent to it in terms of election example is 'comprehensive'.