jumbled vs hugger-mugger

jumbled is not a noun while hugger-mugger is a noun.

Word	Noun	Adjective	Verb	Adverb
jumbled	No	Yes	No	No
hugger-mugger	Yes	Yes	No	Yes

As adjectives, jumbled and hugger-mugger are synonyms defined as:

Other synonyms of jumbled include disorderly, higgledy-piggledy, topsy-turvy.

jumbled (noun)	hugger-mugger (noun)
	a state of confusion

jumbled (adjective)	hugger-mugger (adjective)
in utter disorder	conducted with or marked by hidden aims or methods
	in utter disorder

jumbled (adverb)	hugger-mugger (adverb)
	in secrecy