How many letters does the top answer for “continually changing especially as from one abode or occupation to another” have?

The most common answer is drifting (8 letters).

Crossword clue: continually changing especially as from one abode or occupation to another

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

drifting 8 letters wn-def

aimless wandering from place to place

vagabond 8 letters wn-def

anything that resembles a vagabond in having no fixed place

vagrant 7 letters wn-def

a wanderer who has no established residence or visible means of support