In a sentence
Six example sentences with chiefly, each labelled with its topic.
The lake's pollution comes chiefly from farm runoff, with the old paper mill accounting for the rest.
Environment
The country's exports are chiefly minerals, which makes the whole budget hostage to one commodity price.
Economics
The dish is chiefly rice, with a spoon of lentils and whatever the garden happened to give up.
Cooking
The fund's returns came chiefly from two technology stocks, and the other forty holdings barely moved all year.
Finance
The dialogue is chiefly concerned with justice, though Socrates wanders into poetry and music along the way.
Philosophy
The empire's wealth came chiefly from silver mines, and when the seams ran thin the treasury emptied within a generation.
History
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Found in these word lists
Each source is a published word list that contains chiefly. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.