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

The most common answer is aid (3 letters).

Crossword clue: another word for help

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

aid 3 letters gen-syn

give help or assistance; be of service

assist 6 letters gen-syn

give help or assistance; be of service

assistance 10 letters gen-syn

the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose

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