inaudible
(adj.) not able to be heard
The signals were inaudible when the fans began to cheer.
incessant
(adj.) constant and unending
The mother gave in to the child after her incessant crying.
Incessant rain caused the river to flood over its banks.
inchoate
(adj.) not yet fully formed; rudimentary
The inchoate building appeared as if it would be a fast-food restaurant.
The outline of the thesis was the inchoate form of a very complex
theory.
incidental
(adj.) extraneous; unexpected
The defense lawyer argued that the whereabouts of the defendant's
sneakers were only incidental to the commission of the crime.
incisive
(adj.) getting to the heart of things; to the point
His incisive questioning helped settle the matter quickly.
inclined
(adj.) apt to; likely; angled
The man's ear for music indicated he was inclined toward learning an
instrument.
The hillside was inclined just enough to make for a fairly serious climb.
incognito
(adj.) unidentified; disguised; concealed
The federal Witness Protection Program makes its charges permanently
incognito.
incoherent
(adj.) illogical; rambling; disjointed
Following the accident, the woman went into shock and became
incoherent as medics struggled to understand her.
incommodious
(adj.) inconvenient
The incommodious illness caused her to miss an important interview.
incompatible
(adj.) disagreeing; disharmonious not compatible
Being incompatible with each other, children were assigned to sit on
opposite sides of the room.
incompetence
(n.) failing to meet necessary requirements
The alleged incompetence of the construction crew would later become
the subject of a class-action suit.
inconclusive
(adj.) not final or of a definite result
The results being inconclusive, the doctors continued to look for a cause
of the illness.
incorporeal
(adj.) not consisting of matter
The apparition appeared to be incorporeal.
incorrigible
(adj.) not capable of correction or improvement
The mischievous boy was an incorrigible practical joker.
incredulous
(adj.) skeptical
The incredulous look on his face led me to believe he was not convinced
of its importance.
The reporter was incredulous on hearing the computer executive's UFO
account.
inculcate
(v.) to impress upon the mind, as by insistent urging
I will inculcate the directions if people are unsure of them.
incursion
(n.) an entry into, especially when not desired
The incursion by enemy forces left the country shocked.
indecipherable
(adj.) illegible
The scribbling on the paper is indecipherable.
indelible
(adj.) that which cannot be blotted out or erased
The photograph of Neil Armstrong setting foot on the moon made an
indelible impression on all who saw it.
indemnify
(v.) to insure against or pay for loss or damage
It is important to indemnify your valuables with a reliable insurance
company.
indict
(v.) charge with a crime
The grand jury indicted her and her husband for embezzlement and six
other lesser counts.
indifferent
(adj.) unconcerned
There he lay, indifferent to all the excitement around him.
indigence
(n.) the condition of being poor
The family's indigence was evident by the run-down house they lived in.
indigenous
(adj.) native to a region; inborn or innate
These plants are indigenous to all of the western states.
Piranha are indigenous to the tropics.
indignant
(adj.) expressing anger to an injustice
He was indignant over the way he was treated.
indolent
(adj.) lazy; inactive
If we find him goofing off one more time, we won't be able to escape the
fact that he's indolent.
An indolent student slept all day.
indomitable
(adj.) not easily discouraged or defeated
The underdog candidate had an indomitable spirit.
indubitably
(adj.) unquestionably; surely
The officer was best indubitably the candidate for captain.
indulgent
(adj.) lenient; patient; permissive
He has indulgent tendencies to eat chocolate when he is happy.
ineluctable
(adj.) something inevitable
They were prepared for the ineluctable disaster.
inept
(adj.) incompetent; clumsy
She would rather update the budget book herself, since her assistant is
so inept.
inert
(adj.) not reacting chemically; inactive
Inert gases like krypton and argon can enhance window insulation.
inevitable
(adj.) sure to happen; unavoidable
A confrontation between the disagreeing neighbors seemed inevitable.
infamous
(adj.) having a bad reputation; notorious
After producing machines that developed many problems, the production
company became infamous for poor manufacturing.
The infamous gang was known for robbery.
infamy
(n.) a bad reputation
The town had only 98 residents, so all it took was one bad apple to bring
infamy on the whole place.
infer
(v.) form an opinion; conclude
From the broad outline he supplied it was easy to infer that the applicant
knew a great deal about trains.
ingenious
(adj.) clever, resourceful
His ingenious idea made it possible to double production at no extra cost.
ingenue
(n.) an unworldly young woman
As an ingenue, Corky had no experience outside of her small town.
ingenuous
(adj.) noble; honorable; candid; also naive, simple, artless, without guile
The ingenuous doctor had a great bedside manner, especially when it
came to laying out the full implications of an illness.
ingratiate
(v.) to bring into one's good graces
The man was hoping to ingratiate himself with his wife by buying a
bouquet of flowers and candy.
ingratitude
(n.) ungratefulness
When she failed to send a thank-you card, her friend took it as a sign of
ingratitude .
inherent
(adj.) part of the essential character; intrinsic
A constant smile is inherent in pageant competitors.
The inherent desire to do well is present throughout the family.
inimical
(adj.) hostile, unfriendly
The chess player directed an inimical stare at his opponent to knock him
off his game.
iniquitous
(adj.) wicked; unjust
The verbal abuse towards the man was truly iniquitous.
initiate
(v.; n.) begin; admit into a group; a person who is in the process of being
admitted into a group
He initiated the dinner discussion by asking his father to borrow the car.
As an initiate to the Explorers, George was expected to have a taste for
the outdoor life.
innate
(adj.) natural; inborn
Her talent is wondrous: it hardly matters whether it's innate or acquired.
A lion's hunting skills are innate.
innocuous
(adj.) harmless; dull; innocent
The remark was rude but innocuous.
He couldn't bear to sit through another innocuous lecture.
The teens engaged in an innocuous game of touch football.
innovate
(v.) introduce a change; depart from the old
She innovated a new product for the home construction market.
innuendo
(n.) an indirect remark; insinuation
The student made an innuendo referring to the professor.
The office was rife with innuendo that a takeover was in the works.
inquisitive
(adj.) eager to ask questions in order to learn
An inquisitive youngster is likely to become a wise adult.
insinuate
(v.) to work into gradually and indirectly
He will insinuate his need for a vacation by saying how tired he has been
lately.
insipid