imbroglio
complicated L words:laboriouslachrymoselackadaisicallaconiclamentationlanguishlegalizationlitigationlogarithmlasciviouslylustrously luminous
A complicated word that starts with the letter "m" is "Mellifluous." It describes a sound that is sweet or musical; pleasant to hear. Often used to characterize smooth and harmonious vocal qualities, it derives from Latin roots meaning "honey" and "flowing." Its rich connotation adds a poetic touch to descriptions of music or speech.
A meaning adulterer but later meaning able
notorious
the meaning of a body of a letter is can be parts or body of people
This is a three-letter prefix meaning "an error."
skill
meaning
False is a five letter word meaning fake.
A four letter word meaning not kosher is: tref
Flush is a five letter word meaning wealthy.
In that situation, the comma is optional. I would put one, because it makes it easier to understand the meaning at a glance, but it is not required.