| Clue | Source | Date |
|---|---|---|
| "Likewise," informally | LA Times Daily | 30 Mar 2025 |
| Slangy term of agreement | LA Times Daily | 03 Nov 2024 |
| "Likewise," informally | LA Times Daily | 23 Oct 2024 |
| Echoic acknowledgment | Newsday | 19 Aug 2023 |
| Slangy "Ditto!" | ||
| Informal "Likewise" | ||
| *"Ditto!" | ||
| *"Ditto!" |