through thick and thin
US /θruː θɪk ænd θɪn/
UK /θruː θɪk ænd θɪn/

1.
na alegria e na tristeza, em todas as circunstâncias
through good times and bad times; in spite of all difficulties
:
•
They promised to stick together through thick and thin.
Eles prometeram ficar juntos na alegria e na tristeza.
•
A true friend supports you through thick and thin.
Um verdadeiro amigo te apoia na alegria e na tristeza.