What does the cryptic crossword clue "Weirdly calm mediator, with emotions running high (12)" mean?

The wordplay uses an anagram. anagram of CALM (synonym="CALM") + MEDIATOR (synonym="MEDIATOR") = MELODRAMATIC The answer is MELODRAMATIC.

Weirdly calm mediator, with emotions running high (12)

Guardian Cryptic #29271 | 4 Down | 2024-01-05 flower