optimistic
/ˌɒptɪˈmɪstɪk/
Proposed by a contributor, not yet supported by evidence.
Sense 1
Meaning · English
Expecting the best in all possible ways.
Adjective
Examples
in an optimistic mood
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
Allowing other processes to perform transactions on the same data at the same time, and checking for conflicts only when changes need to be written back.
Adjective
Examples
optimistic concurrency
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “optimistic” mean?
Expecting the best in all possible ways.
Is “optimistic” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.