insignificance (n.)

• aimlessness
• daintiness
• delicacy
• diminutiveness
• emptiness
• exiguity
• fewness
• futility
• immateriality
• inanity
• inconsequence
• indifference
• ineffectuality
• inferiority
• insufficiency
• irrelevance
• littleness
• marginality
• meagerness
• meaninglessness
• meanness
• minuteness
• moderateness
• noise
• nonsensicality
• nullity
• pettiness
• puniness
• purposelessness
• scantiness
• senselessness
• slightness
• smallness
• tininess
• triviality
• unimportance