insignificant in WordNet English dictionary

1. devoid of importance, meaning, or force
   insignificant  unimportant 
   
2. signifying nothing
   "insignificant sounds"
   insignificant 
   
3. of little importance or influence or power; of minor status
   "a minor, insignificant bureaucrat"; "peanut politicians"
   insignificant  peanut 
   
4. not worthy of notice
   insignificant  undistinguished