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

The most common answer is earphone (8 letters).

Crossword clue: another word for earpiece

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

earphone 8 letters gen-syn

electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear

headphone 9 letters gen-syn

electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear

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