nugatory /nūˈgə-tə-ri/

1. Trifling
2. Worthless
3. Inoperative
4. Unavailing
5. Futile

• self-explaining
• self-explanatory
• self-explication
• self-express
• self-expressed
• self-expresses
• self-expressing
• self-expression
• self-expressive
• self-faced
• self-fed
• self-feeder
• self-feeders
• self-feeding
• self-feeling
• self-fertile
• self-fertilisation
• self-fertility
• self-fertilization
• self-fertilizing
• self-figured
• self-filler
• self-fillers
• self-financing
• self-flattering