childish

"The scientist carefully examined the strange matter in the lab. "

"Baby Shawn threw a tantrum when he was told the bicycle was not his."

"to have a good, bad, or calm temper"

"I went to the supermarket to buy some food."

"The product is undergoing a change in order to improve it."

"Many students invite their parents to school events. "

"The new shoes are suitable for playing sports. "

"Go easy on him: he is but a child."

"After careful consideration, the student made a decision about which college to attend. "

"Baby Shawn threw a tantrum when he was told the bicycle was not his."

"You need to behave yourself, young lady."

"The sudden silence during my presentation began to embarrass me, making me forget what I was going to say next. "