| Clue | Source | Date |
|---|---|---|
| Enter furtively | New York Times | 04 Aug 2026 |
| Enter slowly and quietly (2 wds) | ||
| Enter covertly | ||
| Enter covertly | LA Times Daily | 09 Sep 2017 |
| Enter covertly | ||
| Enter surreptitiously | ||
| Enter stealthily | New York Times | 25 Jan 2015 |
| Enter stealthily | ||
| Enter surreptitiously | ||
| Enter surreptitiously | ||
| Enter slowly | ||
| Enter stealthily | ||
| Enter covertly | ||
| Develop imperceptibly, as errors | ||
| Enter covertly | ||
| Intrude |