Antonyms of noun unimportance

1 of 2 senses of unimportance

Sense 2
unimportance -- (the quality of not being important or worthy of note)
       Antonym of importance (Sense 1)
      => importance -- (the quality of being important and worthy of note; "the importance of a well-balanced diet")

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

2 senses of unimportance

Sense 1
humbleness, unimportance, obscureness, lowliness -- (the state of being humble and unimportant)
       => obscurity -- (an obscure and unimportant standing; not well known; "he worked in obscurity for many years")

Sense 2
unimportance -- (the quality of not being important or worthy of note)
       => value -- (the quality (positive or negative) that renders something desirable or valuable; "the Shakespearean Shylock is of dubious value in the modern world")