How do you spell Insignificance

Available Definitions:
1)  n. - The condition or quality of being insignificant; want of significance, sense, or meaning; as, the insignificance of words or phrases.
2)  n. - Want of force or effect; unimportance; pettiness; inefficacy; as, the insignificance of human art.
3)  n. - Want of claim to consideration or notice; want of influence or standing; meanness.