How many letters does the top answer for “who was the prime minister of the united kingdom for most of world war ii” have?

The most common answer is churchill (9 letters).

Crossword clue: who was the prime minister of the united kingdom for most of world war ii

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

churchill 9 letters otdb

a Canadian town in northern Manitoba on Hudson Bay; important port for shipping grain

winston 7 letters otdb