verbs ending in -en

Which words in English have the -en form (such as in "brighten the day", "hasten the steps" )? Rather than some explicit list, I am looking for the class of words in terms of its origin/etymology.

I guess it is a somewhat literary/archaic form to use, but I am still unsure whether my US English auto-correct is showing it wrong for certain verbs out of ignorance (by which I mean out of Americanisation of English) or simply because such forms do not exist for those particular verbs.

In particular, is ".. to cracken up a tin can." correct?

The suffix -en is an old Inchoative/Causative inflection. It isn't productive any more, however.

The point is not that -en makes a verb out of whatever it attaches to -- that's incidental and almost irrelevant. It's necessary because change of state and causation are expressed by verbs, and that's what Inchoative and Causative mean.

-en can attach to adjectives (ripen 'become ripe; cause to become ripe'), especially some colors (redden 'become red; cause to become red'; whiten, darken, lighten), but not others (*bluen, *purplen, *greyen, *greenen).

Interestingly, this suffix can also occur as a prefix (enjoy 'become joyful', enrich 'become/cause to become rich', enfeeble, etc). They can even occur together, as in enlighten, which means something different from lighten.