What does the cryptic crossword clue "Instigate wicked lie about politician (5)" mean?

The definition is "politician". The wordplay uses an anagram. anagram of MP (synonym="MP") + LIE (synonym="LIE") = IMPEL The answer is IMPEL.

Instigate wicked lie about politician (5)

Guardian Cryptic #25278 | 5 Down | 2011-03-24 flower