IPA: /ˈlæfəblnəs/
KK: /ˈlæfəblnəs/
The quality of being funny or silly enough to make people laugh.
The comedian's laughableness made the audience roar with laughter.
Laughableness → It is formed from "laugh" (from Old English "laehhan", meaning to express joy or amusement) and "-able" (meaning capable of) and "-ness" (meaning the state of). The word "laughableness" refers to the state of being capable of causing laughter or amusement.
Think of the ability to 'express joy' ('laugh') and being 'capable of' ('-able') causing amusement, which is what laughableness means.