Without warning, Trump gets twitchy keeping nothing on Independent politician (9)
I believe the answer is:
impromptu
'without' is the definition.
Both the definition and answer are adverbs.
Perhaps they are linked in a way I don't understand?
'warning trump gets twitchy keeping nothing on independent politician' is the wordplay.
I cannot really see how this works, but
'nothing' could be 'o' (looks like zero - 0) and 'o' is found within the answer.
an anagram of 'trump' is 'rmptu' which is present in the left over letters.
'independent' could be 'i' and 'i' is present in the answer.
'politician' could be 'mp' (Member of Parliament) and 'mp' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for impromptu that I've seen before include "With little or no preparation or forethought" , "Extemporaneous speech" , "Without pre-planning" , "Ad-lib" , "Ad hoc: spontaneous-sounding musical piece mastered by Schubert" .)