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greenhouse effect
The warming of the earth when gases in the air trap the sun's heat.
grievance
A complaint or feeling of resentment.
grind
To crush or break something into small pieces.
groundwater
Water stored underground in soil and rock.
guild
An organization of people with common interests.
gymnasium
A place for physical exercise and sports.
Words selected by Inoh for the TOEFL iBT test. Not an official ETS list. How these words were chosen →