Men collectively come across as untrustworthy types (6)

I believe the answer is:

messrs

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'men' is the definition.
Both the definition and answer are plural nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for messrs that I've seen before include "Plural form of Mr - sounds untidy" , "Multiple men sounding sloppy" , "Multiple misters" , "Form of address for a number of men" , "Title for multiple men who sound sloppy" .)

I've seen this clue in The Irish Times.

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