Seven letter words change one or two letter to make a new word

[Thin_Ice]

dextrin

[Leo_Bloom]

Trident

[CharmaChameleon]

tending

[Thin_Ice]

ensigns

[burpo_the_wonder_mutt]

snigger

[CharmaChameleon]

rigging

[Bayaker]

purging

[Thin_Ice]

gunfire

[burpo_the_wonder_mutt]

fulgent

[Bayaker]

finagle

[Thin_Ice]

finance

[burpo_the_wonder_mutt]

cannery

[CharmaChameleon]

nunnery

[Bayaker]

uncanny

[Thin_Ice]

Tuscany

[Leo_Bloom]

custard
[ETA: Which next can loop us back to Burpo #1718! Word golf 12-under par, according to Vladimir Nabokov’s definition and rules of this thread in Pale Fire.]

[Leo_Bloom]

ETA: Loop to #17218. If Nabokov, differing only slightly from than DealMein, were OP of this thread.

[Thin_Ice]

Playing off custard

drastic

[Leo_Bloom]

plastic

[CharmaChameleon]

caustic