| Answer | Crossword Clue |
|---|---|
| AIRGUITAR | Instrument that's not seen and not heard |
| sinks | Disappear and not be seen or heard of again |
| stealthiest | Behaving, done, or made in a cautious and surreptitious manner, so as not to be seen or heard |
| stealthy | Behaving, done, or made in a cautious and surreptitious manner, so as not to be seen or heard |
| stealthier | Behaving, done, or made in a cautious and surreptitious manner, so as not to be seen or heard |
| glass | optical instrument or device that has one or more lenses and is designed to aid in the viewing of objects not readily seen |
