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namely
Used to introduce a specific explanation or name.
narcotic
A drug that dulls pain and induces sleep.
narrative
A story or account of events.
natural resources
Materials from nature, such as water, forests, and minerals, that people use.
naturalization
The process of becoming a citizen.
navel
The small central scar on the abdomen.
nearly
Almost; not quite.
nebula
A massive cloud of gas and dust in space.
necessarily
inevitably
nectar
A sweet liquid produced by flowers.
needle in a haystack
Something very hard to find.
neighborhood
A small area of a town or city where people live.
nervous system
The network of the brain and nerves that carries signals through the body.
network
broadcasting system
neuron
A cell that transmits nerve impulses.
neurosis
A mental disorder causing anxiety or distress.
neuroticism
A personality trait involving frequent worry, anxiety, and mood changes.
nicotine
A chemical found in tobacco products.
nitrogen
A colorless, odorless gas essential for life.
no big deal
It's not a serious problem or concern.
no doubt about it
Used to say that something is certainly true.
no way
Absolutely not; impossible.
nocturnal
Active during the night or darkness.
nomadic
Living a lifestyle of moving frequently.
Words selected by Inoh for the TOEFL iBT test. Not an official ETS list. How these words were chosen →