1. Not required or requested
   "uncalled-for suggestions" 
2. Unnecessary and unwarranted
   - gratuitous, needless

See also: unnecessary, unneeded, unwanted

• snappiness
• snapping beetle
• snapping shrimp
• snapping turtle
• snappish
• snappishly
• snappishness
• snappy
• snapshot
• snapshot program
• snare
• snare drum
• snarer
• snarf
• snark
• snarky
• snarl
• snarl-up
• snarled
• snarly
• snatch
• snatch block
• snatch up
• snatcher
• snatchy