th
10
Grade ACT
Vocabulary
Unit 10
inarticulate

Adj. lacking the ability to express oneself
clearly
inclement

Adj. severe, rough, or harsh; stormy
incognito

N. having one’s identity concealed
incoherent

Adj. without logical or meaningful
connection
incongruous

Adj. out of place, inappropriate
indigent

Adj. lacking food, clothing, and other
necessities because of poverty
“The Indigent
Family” by WilliamAdolphe
indomitable

Adj. that cannot be subdued or overcome,
as persons, will, or courage
inertia

N. inactivity; sluggishness, lack of effort
infallible

Adj. absolutely trustworthy or sure
My cousins are
infallible people.
innate

Adj. existing in, belonging to, determined
from birth
It was innate that
these babies would
become famous
dancers one day.
innovation

N. something new or different introduced
inscrutable

Adj. incapable of being investigated or
analyzed
instigate

V. to urge, provoke, or start some sort of
action
interloper

N. a person who interferes in other
people’s affairs
intrepid

Adj. resolutely fearless
My cousin/big brother, Joey.
Word Power
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16. jud, judi, judic, – judge, lawyer, law
 Judicial
 judge
17. bi – both, double, tow twice
 Binary
 Bicycle
18. sub – under
 Submarine
 Subterranean
19. – en made of, make
 Mistaken
 broken
20. – ice condition, state, quality
 Solice
 hospice