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confound
to confess or astonish
lethargy
prolonged sluggishness; unconsciousness
pervade
to spread throughout
eloquent
vividly expressive
lucid
clear; mentally sound
supposition
something supposed; an assumption
indeterminate
not precisely known or determined
pertinacity
unyielding persistance or adherence
voracity
greed for food
insuperable
impossible to overcome