You gave us a good hard one to end on! Goodnight!
blimp
Limp
(what does “NN” mean?)
imp
Ink
inuk
night-night
Though in most contexts it’s no name.
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inck
Old spelling of ink.
Our Inck-makers to save charges, mingle many times Trane-Oyl among theirs and a great deal of Rosin; which Trane-Oyl by its grossness Furs and Choaks up a Form , and by its fatness hinders the Inck from drying; so that when the Work comes to the Binders , it Sets-off; and besides is dull, smeary and unpleasant to the eye. And the Rosin , if too great a quantity be put in, and the Form be not very Lean-Beaten , makes the Inck turn yellow
– The Invention of Printing, 1876
Inca
inch
Anch
arch
march
match
batch
bitch
hitch 
ditch
Dutch
The –tch series is like the –cch– one: not easy to escape.
Duch (seems to be a surname)