implacable
adjective
not to be appeased, mollified, or pacified
imbroglio
noun
misunderstanding, disagreement of a complicated or bitter nature, as between persons or nations
immaculate
adjective
free from spot or stain
imminent
adjective
likely to occur at any moment
immutable
adjective
not mutable
impair
verb
make or cause to become worse
impassive
adjective
without emotion
impecunious
adjective
having little or no money
impede
verb
retard in movement or progress by means of obstacles or hindrances
impediment
noun
obstruction
impending
adjective
about to happen
imperative
adjective
absolutely necessary or required
imperious
adjective
domineering in a haughty manner
impermeable
adjective
not permeable
imperturbable
adjective
incapable of being upset or agitated
impervious
adjective
not permitting penetration or passage
impetuous
adjective
of, pertaining to, or characterized by sudden or rash action, emotion
impiety
noun
lack of piety
implicate
verb
show to be also involved, usually in an incriminating manner
implicit
adjective
implied, rather than expressly stated
implosion
noun
imploding
importune
verb
press or beset with solicitations
imprecation
noun
imprecating
impromptu
adjective
made or done without previous preparation
impudent
adjective
of, pertaining to, or characterized by impertinence or effrontery
impugned
verb
challenge as false
impute
verb
attribute or ascribe
