Costly

6 lettersadjectivecommon

Updated June 2026

Definition

Involving great expense, loss, or sacrifice.

“The legal dispute proved to be a costly mistake that drained the company's financial reserves.”

Pronunciation

IPA

/ˈkɒst.li/

Syllables

cost·ly

Related Words

Synonyms

expensive dear pricey

Antonyms

cheap affordable inexpensive

Word Game Tips

🟩

Wordle

only one traditional vowel (O) in the whole word, COS opening with LY ending is a distinctive pattern

🔤

Scrabble

Y scores 4 points and the single vowel makes this ideal when vowels are scarce, LY ending is board-friendly

Words Related to Costly

Words one letter different

Change a single letter of “costly” to make these 6-letter words — useful for Wordle and crossword clues.

cosily mostly

Words you can make from Costly

Shorter words formed from the letters in “costly”.

clots cloys colts cotys cytol octyl stylo clos clot cloy cols colt coly cost cosy cots coys cyst lost lots scot slot toys

Explore Similar Words

6-letter words starting with C 6-letter words ending with Y All 6-letter words 5-letter words 7-letter words All word lists

Try These Tools

Anagram Solver Scrabble Helper Crossword Solver Spelling Bee Solver

Dictionary References

Look up costly in an authoritative dictionary for full definitions, pronunciation, and etymology.

Cambridge Dictionary Merriam-Webster

Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!

Download Free