through thick and thin

Meaning

1. even when there are problems or difficulties

   He's supported the team for over ten years through thick and thin.

In the movies · 2

• "My fans, oh, they stick with me through everything, through thick and thin." Do not stick with me through thick.Bo Burnham: Make Happy2016
• It's just us. You see? We stick together through thick and thin, and never stop loving each other, and magical things happen!National Theatre Live: Frankenstein2011

From the same entry

• give a thick ear
• thick as thieves
• thick as two short planks
• a thick head
• your thick head
• a thick skin
• blood is thicker than water
• thick on the ground
• in the thick of
• lay it on thick
• thick and fast