The antonyms for the word "tightfistedness" can be recognized as generosity, liberality, magnanimity, bountifulness, or munificence. Generosity refers to being liberal in giving or sharing, whereas liberality means openness to new ideas or adaptable to change. Magnanimity is the act of being generous or forgiving, while bountifulness is the ability to give or provide ample resources. Munificence is the quality of being generous in a grand way. All these antonyms are the opposite of tightfistedness, which means being stingy, miserly, scarce, or scanty. Using these antonyms in a sentence can create a positive impact on the communication and portray the speaker as a generous person.