Antonyms of noun unhealthfulness

1 sense of unhealthfulness

Sense 1
unhealthfulness -- (the quality of promoting poor health)
       Antonym of healthfulness (Sense 1)
      => healthfulness -- (the quality of promoting good health)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun unhealthfulness

1 sense of unhealthfulness

Sense 1
unhealthfulness -- (the quality of promoting poor health)
       => unwholesomeness, morbidness, morbidity -- (the quality of being unhealthful and generally bad for you)