What context can I use each word in?
Learn when and how to use these words with these examples!
principally
Example
I am principally concerned with the safety of my family. [principally: adverb]
Example
The company's success is principally due to its innovative products. [principally: adverb]
chiefly
Example
The book is chiefly concerned with the effects of climate change. [chiefly: adverb]
Example
The company's profits are chiefly derived from its overseas operations. [chiefly: adverb]
Good things to know
Which word is more common?
Chiefly is more commonly used than principally in everyday language. Chiefly is versatile and covers a wide range of contexts, while principally is less common and typically used in more formal or academic settings.
What’s the difference in the tone of formality between principally and chiefly?
Principally is more formal than chiefly and is often used in academic or professional writing. Chiefly is more versatile and can be employed in both formal and informal contexts.