Yell

To sign yell, take your open, dominant hand, and starting from your chest, extend your hand up diagonally, from the chest to around forehead level, as if to emphasize the raising of your voice. To be emphatic about it, use both hands to signal yell by taking turns taking each hand to and from your chest.

This sign is similar to sing, but there is no need to worry about confusion, as these signs should be taught to your toddler in context, along with the appropriate facial expression.