What does unpredicted mean?
Unpredicted is an adjective meaning that something was not forecast, anticipated, or expected in advance. It commonly describes events, outcomes, changes, consequences, or developments that occurred contrary to an existing forecast or assumption. The word can also emphasize the absence of advance preparation: an unpredicted delay may disrupt plans that had not allowed for any delay. In general use, “unexpected” is more frequent, but “unpredicted” can be more precise because it points specifically to a failure of prediction rather than to surprise alone. For example, an earthquake may be described as unpredicted if no reliable warning was available, while a sudden policy decision is more naturally called unforeseen. Unpredicted is not quite synonymous with unpredictable: the former says that a particular occurrence was not predicted, whereas the latter says that something is inherently or habitually difficult to forecast. The word is standard in both British and American English and is appropriate in formal and informal contexts.
adjectiveNot predicted or anticipated; occurring or existing without being forecast in advance.
- Not predicted, anticipated, or forecast in advance.
"The team was unprepared for the unpredicted change in weather conditions."
"Several unpredicted complications delayed the launch."
"Historians continue to identify the causes of events that were entirely unpredicted at the time."
An event can be unpredicted even when it is predictable: the forecast may fail on the day.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unpredicted come from?
Unpredicted was formed in English by combining the negative prefix un- with predict. Predict comes from Latin praedīcere, meaning “to declare in advance” or “foretell,” formed from prae- (“before”) and dīcere (“to say”). Latin praedīcere also underlies related English words such as predicate, while the modern English forms prediction and predictor developed within the predict word family.
How unpredicted is actually used
This word is neutral in register and is common in journalism, academic writing, and formal discussion. It is especially useful when something was not anticipated, although it should not be used when the broader claim is that something cannot be forecast at all.
Easily confused with unpredicted
Unpredicted describes something that was not forecast in a particular case, whereas unpredictable describes something that cannot be predicted reliably.