As adjectives the difference between thinkable and thankable
is that thinkable is able to be thought or imagined; conceivable; feasible or possible while thankable is capable of being thanked.
thinkable
English
Adjective
(
en adjective)
Able to be thought or imagined; conceivable; feasible or possible.
Morally acceptable or legal (rare).
Antonyms
* unthinkable
thankable
English
Adjective
(-)
Capable of being thanked.