chiefly

UK: ˈtʃiːfli | US: ˈtʃiːfli

Definition
  1. adv. primarily; mainly

  2. adv. for the most part

  3. adv. in a manner characteristic of a chief

Structure
chief <leader>ly <adverb suffix>
Etymology

The word "chiefly" combines "chief," derived from Old French "chef" (meaning "leader" or "head," from Latin "caput" for "head"), with the adverbial suffix "-ly," which turns adjectives into adverbs. Originally, "chief" referred to a person of high rank, and "-ly" generalized its meaning to "in the manner of a leader" or "primarily." Over time, it evolved to emphasize dominance or priority in context.

Examples
  1. The region is chiefly known for its wine production.

  2. His speech was chiefly focused on economic reforms.

  3. She works chiefly from home but visits the office occasionally.

  4. The book is chiefly intended for beginners.

  5. The damage was chiefly caused by heavy rainfall.