weakest link

noun

1. the weakest link
   the person who is making the least contribution to the collective achievement of the group

Word History and Origins

Origin of weakest link¹

C20: from the British television quiz of the same name

Example Sentences

The Dodgers’ starting pitching was supposed to be their weakest link.

From Los Angeles Times

We all gathered round — Dame this, Dame that, Sir this, Sir that, all these incredible people of the British acting world waiting like Labradors — and he said, ‘One of you is the weakest link’ and just left.

From Los Angeles Times

Black men between the ages of 18 and 49 are Harris’ weakest link, according to the Howard survey, which found they supported her 75% to 16%.

From Los Angeles Times

They had had enough of being the "tag-along squad", the "weakest link" in the British Cycling machine after an era around the London and Rio 2016 Olympics when sprint medals were not sparse thanks to the likes of Pendleton, Varnish and Becky James.

From BBC

Romesh Ranganathan, meanwhile, hosts several programmes for the BBC, including documentaries and The Weakest Link, for which he is not listed.

From BBC