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nouns
verbs
adj.
more nouns
100
a difficult problem
What is conundrum
100
grasp mentally
What is comprehend
100
having overlapping coils or folds
What is convoluted
100
secondary in importance
What is subsidiary
200
a slender threadlike object or fiber
What is filament
200
to infer or estimate by projecting known information
What is extrapolate
200
lower in rank
What is subordinate
300
uncertainty or perplexity
What is quandary
300
to take the place of, replace
What is supersede
300
incapable of being expressed
What is ineffable
400
a ruling or prevailing system
What is regime
400
harmful in a subtle manner
What is insidious
500
the drink of Gods
What is nectar
500
of producing or having a pleasant tune
What is melodious