- (not comparable) Very great or numerous.
- The loss the National Libarary suffered from the fire is uncalculable.
- (not comparable) (mathematics) Impossible to calculate.
- (comparable) Of a person's mood or character, etc.: Impossible to predict.
- He is uncalculable when he's drunk. He can turn from an amiable person into a violent horror from one moment to the next.
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Full Definition of incalculable