A politician lied, oddly enough (5)
I believe the answer is:
ample
'enough' is the definition.
(ample means enough or plenty)
'a politician lied oddly' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'oddly' means one should take alternating letters (letters in the odd-numbered positions are used).
The alternate letters of 'lied' are 'le'.
'a'+'mp'+'le'='AMPLE'
(Other definitions for ample that I've seen before include "Large, capacious" , "Adequate" , "Large, accommodating" , "No more, please!" , "Generous" .)