American English

How to pronounce testify against someone

TEHS-tuh-fai uh-GEHNST SUHM-wuhn

/ˈtʰɛs.təˌfaɪ əˈgɛnst̚ ˈsəmˌwən/

In natural speech

Listen for how the words join together.

/ˈtʰɛs.təˌfaɪ ⁀əˈgɛnst̚ ˈsəmˌwən/

Practice out loud