How many letters does the top answer for “in a direct course” have?

The most common answer is straightway (11 letters).

Crossword clue: in a direct course

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

straightway 11 letters wn-def

in a direct course

direct one's course or way 50% similar → wend

direct the course of; manage or control 50% similar → conduct

wander from a direct or straight course 50% similar → sidetrack, straggle