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“ponomania”
An abnormal enthusiasm of work to an excess: Sam evidently had morbid impulse to be constantly working on the farm and said that he didn't have time to join the others for a beer in the evenings.
This entry is located in the following units:
mania-, -mania, -maniac, -maniacal, -manic, -manically, -maniacally
(page 22)
pono-, pon-, -ponic, -ponics +
(page 2)