How To Pronounce Costly

costly

UK
Phonemic
/ˈkɒst.li/
Phonetic
[ˈkʰʷɒst.li]
US
Phonemic
/ˈkɔːst.li/

In British English, costly is pronounced /ˈkɒst.li/. The narrow phonetic transcription is [ˈkʰʷɒst.li]. In American English, it is pronounced /ˈkɔːst.li/.

Costly has two syllables, and the main stress falls on the first syllable. The British and American pronunciations are different, so listen to both.

Slashes / / show the phonemic transcription, the sounds that change meaning. Square brackets [ ] show the phonetic transcription, with the finer detail of how the sounds are actually made.

Syllables, Stress And Endings

Syllables And Stress

kɒstli

Costly has two syllables in British English, and the main stress is on the first syllable, shown in colour above. Its stress pattern is Oo, where O is the stressed syllable.

costly + -er
-er (comparative) is /ə/ in UK English and /ɚ/ in US English.
UK
/ˈkɒst.li.ə/
US
/ˈkɔːst.li.ɚ/
costly + -est
-est (superlative) is always /ɪst/.
UK
/ˈkɒst.li.ɪst/
US
/ˈkɔːst.li.ɪst/

Questions About Costly

How do you pronounce costly in British English?

In British English, costly is pronounced /ˈkɒst.li/. The narrow phonetic transcription is [ˈkʰʷɒst.li].

How do you pronounce costly in American English?

In American English, costly is pronounced /ˈkɔːst.li/.

How many syllables are in costly?

Costly has two syllables, /kɒst/ + /li/.

Where is the stress in costly?

The main stress is on the first syllable, /kɒst/.

Do British and American English pronounce costly the same way?

No. British English has /ˈkɒst.li/ and American English has /ˈkɔːst.li/.

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Other Words With The Stress Pattern Oo

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