Is thunk a past tense of think?

Answer 1

Yes, "thunk" it is the past participle of think.

It reminds me of "snuck," which can be used instead of sneaked.

But, most people don't use either, it sounds weird to the ear if one is unsure.

A lot of people choose a word tense based on what sounds correct. But, most Americans speak incorrectly. Choosing the most common use isn't always the correct or proper use.

Use an accredited online dictionary for quick easy answers.

http://www.merriam-webster.com/

Answer 2

No, "thunk" is not a past tense of "think." "Thunk" is a colloquial term used in computing to describe the action of implementing a function call.