1.  unpalatability(n = noun.attribute) unpalatableness - the property of being unacceptable to the mouth;
is a kind of taste property
has particulars: disgustingness, distastefulness, nauseatingness, sickeningness, unsavoriness, unappetisingness, unappetizingness
Antonym: palatability
Derived form adjective unpalatable₁

2.  unpalatability(n = noun.attribute) unpalatableness - the property of being unacceptable to the mind; "the policy's unpalatability caused an uproar"
is a kind of disagreeableness
has particulars: disgustingness, unsavoriness