Definition of over-optimistic

over-optimisticadjective

quá lạc quan

/ˌəʊvər ˌɒptɪˈmɪstɪk//ˌəʊvər ˌɑːptɪˈmɪstɪk/

namespace

too confident that something will be successful

Example:
  • I'm not over-optimistic about my chances of getting the job.

showing more confidence that something will be successful than is shown to be right or reasonable by later events

Example:
  • The sales forecasts turned out to be over-optimistic.