deadly
US /ˈded.li/
UK /ˈded.li/

1.
2.
extremadamente eficaz, mortalmente preciso
extremely thorough or effective
:
•
She delivered a deadly accurate shot.
Ella realizó un disparo mortalmente preciso.
•
His wit was deadly, leaving everyone speechless.
Su ingenio era mortal, dejando a todos sin palabras.
1.
mortalmente, extremadamente
to an extreme or excessive degree
:
•
He was deadly serious about his threat.
Estaba mortalmente serio con su amenaza.
•
The air was deadly still.
El aire estaba mortalmente quieto.