plentifula.1. Containing plenty; copious; abundant; ample; as, a plentiful harvest; a plentiful supply of water.()2. Yielding abundance; prolific; fruitful.()If it be a long winter, it is commonly a more plentiful year. (Bacon.)3. Lavish; profuse; prodigal.()He that is plentiful in expenses will hardly be preserved from (Bacon.)()