American English

How to pronounce testify on behalf of someone

TEHS-tuh-fai AWN bih-HAAF UHV SUHM-wuhn

/ˈtʰɛs.təˌfaɪ ɔn bɪˈhæf əv ˈsəmˌwən/

In natural speech

Listen for how the words join together.

/ˈtʰɛs.təˌfaɪ ⁀ɔn bɪˈhæ fəv ˈsəmˌwən/

Practice out loud