Antonyms of noun significance

1 of 3 senses of significance

Sense 1
significance -- (the quality of being significant; "do not underestimate the significance of nuclear power")
       Antonym of insignificance (Sense 1)
      => insignificance -- (the quality of having little or no significance)

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

3 senses of significance

Sense 1
significance -- (the quality of being significant; "do not underestimate the significance of nuclear power")
       => importance -- (the quality of being important and worthy of note; "the importance of a well-balanced diet")

Sense 2
significance, import, implication -- (a meaning that is not expressly stated but can be inferred; "the significance of his remark became clear only later"; "the expectation was spread both by word and by implication")
       => meaning, substance -- (the idea that is intended; "What is the meaning of this proverb?")

Sense 3
meaning, significance, signification, import -- (the message that is intended or expressed or signified; "what is the meaning of this sentence"; "the significance of a red traffic light"; "the signification of Chinese characters"; "the import of his announcement was ambiguous")
       => message, content, subject matter, substance -- (what a communication that is about something is about)