Clam up and Tongue-tie

Clam up verb - To stop talking.

Tongue-tie and clam up are semantically related in silence topic. In some cases you can use "Tongue-tie" instead a verb "Clam up", when it comes to topics like make or be quiet.

Tongue-tie verb - Deprive of speech.

Clam up and tongue-tie are semantically related in silence topic. Sometimes you can use "Clam up" instead a verb phrase "Tongue-tie", if it concerns topics such as make or be quiet.