At sixes and sevens and Hugger-mugger

Hugger-mugger and at sixes and sevens are semantically related In some cases you can use "Hugger-mugger" instead an adjective phrase "At sixes and sevens".

Hugger-mugger adjective - Lacking in order, neatness, and often cleanliness.

At sixes and sevens and hugger-mugger are semantically related in disorderly topic. Sometimes you can use "At sixes and sevens" instead an adjective phrase "Hugger-mugger".