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help oneself to
To take something freely without asking, especially food.
herbivore
An animal that primarily eats plants.
heredity
the passing of traits from parents to offspring
hibernate
To sleep for an extended period during winter.
hibernation
A state of inactivity for animals in winter.
hieroglyph
A picture or symbol used as a unit of writing, as in ancient Egypt.
hit it off
To like each other and get along well right away.
hit the books
To start studying seriously.
hit the ceiling
To become very angry very suddenly.
hit the hay
To go to bed to sleep.
hit the nail on the head
to be exactly right or accurate.
hit the spot
to satisfy a need, especially hunger.
hold off
to delay an action or decision
hold one's horses
to wait or be patient
hold up
to delay or stop progress
homonym
A word that sounds or looks like another word but means something different.
horizontal
Parallel to the ground; flat.
hormone
A chemical that helps control body functions.
humanitarianism
The belief that people should work to reduce the suffering of others.
humidity
dampness in the air
hurricane
A powerful tropical storm.
hybrid
A mix of two different things.
hydrocarbon
A chemical compound made of hydrogen and carbon.
hydrogen
A colorless gas that is the simplest element.
Words selected by Inoh for the TOEFL iBT test. Not an official ETS list. How these words were chosen →