Someone (maka-) is able to keep a expressionless face after a laugh, scolding, or mishap.
Makasimedaw a nawara, ta nabo kwarta na.
He arrived being able to keep an expressionless face, because he lost the money.
Someone (mayCV-) keeps an expressionless face.
Ilo. siméd 'to do with caution or utmost care'
Maysisimed si ādi, ta pinaydabdab ni ānang.
Younger sibling keeps an expressionless face, because mother scolded him.