re: Queue-- French queue appeared in 1748 in English, referring to a plait of hair hanging down the back of the neck.
this is the first meaning i knew for the word queue-- in the 1950's (how is it i remember things from the 1950's? i can't be that old!) the word was used to define old fashioned chinese-- "a china man with a queue" -- this was from reading-- since i remember not knowing how to pronounce it!

quiescent is a much newer word for me.--is use as a legal term in food-- some ice cream is quiescently frozen-- frozen with out being whipped or beaten at the same time -- still frozen is how is is defined-- where still means motionless. many of the indian (sub continent) ice creams are quiescently frozen, and have a very different texture than most american ice creams.

i never put these words together--or saw the common root..

this is wonderful-- it not just a new word-- it is understanding the common thread of meaning..