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problem
luminary
contend

prob·lem

problem

 
 
pronunciation:
pra blm
parts of speech:
noun, adjective
features:
Word Combinations (noun), Word Explorer
part of speech: noun
definition 1: a question or circumstance that causes difficulty or uncertainty.
Pollution is one of the problems that began with the industrial revolution.Some people think they can solve any problem with money.Does it help to talk about your problems with someone else?
synonyms:
difficulty, knot, question
similar words:
business, case, challenge, complication, conflict, dilemma, issue, matter, mystery, perplexity, poser, predicament, puzzle, quandary, riddle, rub, trouble
definition 2: a question, puzzle, or statement presented for discussion or solution.
The teacher assigned several math problems for homework.I couldn't figure out the answer to the last problem on the test.What happened to the population of the colony is still a problem for historians.
synonyms:
question
similar words:
challenge, conundrum, issue, knot, poser, puzzle, riddle
Word CombinationsSubscriber feature About this feature
 
part of speech: adjective
definition: difficult to manage.
He's been a problem prisoner since he first arrived.
synonyms:
difficult, intractable, unmanageable
similar words:
incorrigible, obstinate, obstreperous, recalcitrant, refractory, restive, stubborn, unruly
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  mathematics