Definition from Wiktionary, the free dictionary
- Especially or unreasonably cautious.
2007 January 17, Scott Shane, “As Trial Begins, Cheney’s Ex-Aide Is Still a Puzzle”, in New York Times:
- By all accounts a first-rate legal mind and a hypercautious aide whose discretion frustrated reporters, he is charged with repeatedly lying to a grand jury and to the F.B.I. about his leaks to the news media in the battle over Iraq war intelligence.