| Similarity | Rank | |
|---|---|---|
| clandestinely | 0.857 | 95782 |
| covert | 0.838 | 19630 |
| covertly | 0.774 | 45621 |
| surreptitious | 0.757 | 79711 |
| espionage | 0.745 | 26544 |
| undercover | 0.734 | 20065 |
| C.I.A. | 0.727 | 70543 |
| CIA | 0.722 | 9037 |
| subterfuge | 0.710 | 60928 |
| counterintelligence | 0.709 | 97942 |
| secretive | 0.709 | 25159 |
| top-secret | 0.704 | 62418 |
| spies | 0.702 | 22486 |
| CIA's | 0.701 | 49798 |
| smuggling | 0.700 | 22742 |
| spying | 0.699 | 20954 |
| nefarious | 0.697 | 33621 |
| illicit | 0.694 | 18237 |
| operatives | 0.693 | 26245 |
| secret | 0.675 | 2130 |
| conspiratorial | 0.665 | 66812 |
| surreptitiously | 0.660 | 50473 |
| assassinations | 0.658 | 42499 |
| interdiction | 0.657 | 77518 |
| paramilitary | 0.657 | 36461 |