The Collaborative International Dictionary
Overcautious \O"ver*cau"tious\, a. Too cautious; cautious or prudent to excess. -- O"ver*cau"tious*ly, adv. -- O"ver*cau"tious*ness, n.
Wiktionary
a. Excessively cautious.
WordNet
adj. unnecessarily cautious; "sometimes it doesn't pay to be overcautious in business"
Usage examples of "overcautious".
And NASA showed many symptoms of an aging, arteriosclerotic, overcautious, unadventurous bureaucracy.
He knew the Halogai knew most Videssians thought as he did, and also knew the Halogai reckoned imperials overcautious at best in war, at worst simply dull.
McClellan, as we well know, is always overcautious and overestimates our numbers, but public opinion in the North will force him to action.
However, as he knows us, we also know him, know of his frequently overcautious nature, of his occasional indecisiveness, of his penchant for turnabouts and betrayals, of his vanity and arrogance.