How many letters does the top answer for “a chadic language spoken in northern nigeria” have?

The most common answer is bade (4 letters).

Crossword clue: a chadic language spoken in northern nigeria

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

bade 4 letters wn-def

a Chadic language spoken in northern Nigeria

ron 3 letters wn-def

a Chadic language spoken in northern Nigeria