How many letters does the top answer for “a slavonic language spoken in rural area of southeastern germany” have?

The most common answer is lusatian (8 letters).

Crossword clue: a slavonic language spoken in rural area of southeastern germany

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

lusatian 8 letters wn-def

a Slavonic language spoken in rural area of southeastern Germany

sorbian 7 letters wn-def

a Slavonic language spoken in rural area of southeastern Germany