| Answer | Crossword Clue |
|---|---|
| BRR | Caroler's sound, at times |
| BAM | Carpenter's sound, at times |
| hypersonic | flying at more than five times the speed of sound |
| hypersonically | HYPERSONIC, flying at more than five times the speed of sound |
| DING | "Time's up" sound |
| ECHO | Sound heard multiple times |
| BRR | Sound from people in Chicago or New York these days (time's up, winter!) |
| hypersonic | Relating to speeds of more than five times the speed of sound (Mach 5) |
| twee | affectedly or excessively dainty, delicate, cute, or quaint such a theme might sound twee or corny Times Literary Supplement |
