Longman Dictionary of Contemporary English
Usage examples of "over-optimistic".
This however comes from Warburg who is alternately over-optimistic and over-pessimistic -- at any rate, always believes in the imminence of enormous and dramatic changes.
Smith opened the leading door, did his best to ignore the icy blast of wind that gusted in through the opening, and looked vertically downwards, realising that he had been over-optimistic in his assessment of the distance between cable-car and ground.
If anything, she thought him over-optimistic, advancing as he was against a strong defensive front: the T'Kai right was protected by a river, the left anchored by high ground and a stand of trees.
Dimity, I think we have been over-optimistic about the number of Protectors on the Hollow Moon and the damage we did.
I talked with her briefly on the evening of my arrival, before I presented myself to Cesare, and expressed to her my doubts as to whether Lucrezia might have been over-optimistic about her brother's desire for a reconciliation with me.