How many letters does the top answer for “one whose occupation is decorating walls with wallpaper” have?

The most common answer is paperer (7 letters).

Crossword clue: one whose occupation is decorating walls with wallpaper

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

paperer 7 letters wn-def

one whose occupation is decorating walls with wallpaper

paperhanger 11 letters wn-def

one whose occupation is decorating walls with wallpaper