Word.ws English Dictionary

costliest

costliest is the superlative form of costly.

Meaning of costly

Adjective

costly (comparative costlier or more costly, superlative costliest or most costly)

  1. Of high cost; expensive.
    • a costly activity

Questions about costliest

What is costliest the superlative form of?
Costliest is the superlative form of costly.

Words near costliest in the dictionary

  1. costlessly
  2. costlessness
  3. Costley
  4. Costleys
  5. costlier
  6. costliest
  7. costlily
  8. costliness
  9. costlinesses
  10. Costlow
  11. Costlows

Source and license

Adapted from Wiktionary: costliest (page history and authors); costly (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “costliest.” Word.ws, https://word.ws/costliest. Based on Wiktionary, CC BY-SA 4.0.