Answer: prolific

AnswerCrossword Clue
PROLIFICFertile
PROLIFICVery productive
PROLIFICProducing freely
PROLIFICVery productive, as a writer
PROLIFICFecund
PROLIFICLike Isaac Asimov
PROLIFICPutting out a lot
PROLIFICBearing in abundance
PROLIFICAbundantly fruitful
prolific(of a sports player) High-scoring
prolificabundant (in great plenty)
prolific(of a river, area, or season of the year) Characterized by plentiful wildlife or produce
prolific(of an artist, author, or composer) Producing many works
prolificPresent in large numbers or quantities; plentiful
prolific(of a plant, animal, or person) Producing much fruit or foliage or many offspring