Quirks expose report of deceptive people (8)

I believe the answer is:

outliers

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'quirks' is the definition.
Although both the answer and definition are plural nouns, I cannot see how one could define the other.

'expose report of deceptive people' is the wordplay.
'expose' becomes 'out' (to out someone is to expose them).
'report of deceptive people' becomes 'liers' (I can't justify this - if you can you should believe this answer much more).
'out'+'liers'='OUTLIERS'

Can you help me to learn more?

I've seen this clue in The Guardian.

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