The Collaborative International Dictionary
Amusiveness
Amusive \A*mu"sive\ (?; 277), a. Having power to amuse or entertain the mind; fitted to excite mirth. [R.] -- A*mu"sive*ly, adv. -- A*mu"sive*ness, n.
Wiktionary
amusiveness
n. The state or quality of being amusive.