What context can I use each word in?
Learn when and how to use these words with these examples!
costliest
Example
The costliest item on the menu was the lobster dish. [costliest: superlative adjective]
Example
The costliest mistake I ever made was buying a car without doing proper research. [costliest: superlative adjective]
priciest
Example
The priciest hotel in town is fully booked for the weekend. [priciest: superlative adjective]
Example
I can't afford the priciest phone model, so I'll have to settle for a cheaper one. [priciest: superlative adjective]
Good things to know
Which word is more common?
Priciest is more commonly used than costliest in everyday language and is more likely to be understood by English learners.
What’s the difference in the tone of formality between costliest and priciest?
Costliest is more formal than priciest and may be more appropriate in academic or professional settings where a more elevated tone is required.