Sentences with Clam Up

The toddler tends to clam up when meeting new people, observing quietly from a distance.

In the spooky haunted house, my younger sister would clam up, afraid to utter a single word.

The toddler tends to clam up around strangers, hiding behind his mother whenever someone new approaches.

The toddler tends to clam up around strangers, holding onto their parent's hand for comfort.

The shy student would clam up in front of the class, avoiding eye contact and staying silent during presentations.