All 6 Uses

erratic
in
Flowers for Algernon -- Novel
(Edited)

When someone from the audience asked Burt if he was suggesting that this erratic behavior was directly caused by increased intelligence, Burt ducked the question.
p. 158.5

erratic = irregular or unpredictable
It is possible that both the increased intelligence and the erratic behavior at this level were created by the original surgery, instead of one being a function of the other.
p. 158.7
It's also possible that this erratic behavior is unique to Algernon.
p. 158.8
But, as Burt pointed out at the convention, his behavior is erratic.
p. 188.9
Algernon's behavior is becoming erratic again.
p. 214.1 *
When he found himself moving along the unfamiliar path, he slowed down, and his actions became erratic: start, pause, double back, turn around and then forward again, until finally he was in the cul-de-sac that informed him with a mild shock that he had made a mistake.
p. 239.7

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