Definition of "problem"
noun:
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A difficulty that has to be resolved or dealt with.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A question to be answered, schoolwork exercise.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A puzzling circumstance.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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adjective:
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Difficult to train or guide; unruly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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