1. Antonyms for Appositenesses include improperness, improprieties, inappositeness, inappropriatenesses, inaptnesses, infelicities, unfitnesses, unseemlinesses

2. Antonyms for Aptnesses include inappropriatenesses, improperness, improprieties, inappositeness, inAptnesses, infelicities, unfitnesses, unseemlinesses : 5

3. 25 She winced at their infelicities, at the clumsy way they beat about the bush.

4. Any work of this level of Comprehensiveness, however, is bound to contain its share of omissions, errors and infelicities. From the Cambridge English Corpus In this sense, the portability and ease of …