this summer will be, by far, its sternest test yet
his mother was stern and hard to please.
She issued a stern warning to those who persist in violence.
He said stern measures would be taken against them
Susan gave the dog a stern look.
“This is Venezuela and you need a visa,” he said sternly.
stern (noun): Popa (barco).
stern (adj.): Severo, estricto, adusto, serio. que es severo y estricto