main difficulty
Synonyms for main
primary (principal, ,
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key (central, big, grand
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core (staple, cardinal, basic
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chief (head, senior, superior
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master
dominant
foremost
premier
predominant
base
trunk
primal
principal part
See all synonyms for mainSynonyms for difficulty
trouble (challenge, problem, hassle
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complexity (complication, intricacy, difficultness
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hardship
obstacle (impediment, odds, snag
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embarrassment
predicament
See all synonyms for difficulty