How many letters does the top answer for “another word for synchroscope” have?

The most common answer is synchroniser (12 letters).

Crossword clue: another word for synchroscope

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

synchroniser 12 letters gen-syn

an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot

synchronizer 12 letters gen-syn

an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase