Sirenical is an uncommon word that refers to a state of being gloomy, mournful, or pensive. It's pronounced "sigh-REH-ni-kuhl" with stress on the second syllable. The word is derived from the Greek word "siren" which means "mermaid" or "temptress". Adding the suffix "-ical" means "pertaining to", thus creating the adjective form "sirenical". Despite not being a commonly used word, it has a unique and evocative sound that adds depth to any writing or conversation.