turn serious

Examples (10)

• He was joking around, but then his face turned serious.
• The discussion quickly turned serious when they started talking about the budget.
• Her playful demeanor can often turn serious when the topic shifts to her work.
• I hope our little joke doesn't suddenly turn serious.
• After the news broke, the atmosphere in the room turned distinctly serious.
• He had to turn serious for a moment to explain the gravity of the situation.
• The doctor's tone turned serious as he delivered the diagnosis.
• Don't let this lighthearted chat suddenly turn serious.
• Even though they were laughing, the underlying message began to turn serious.
• Let's address this now before it turns serious and we lose our focus.