Shouldened is a related term of mightened.
As a contraction mightened is
mistaken re-analysis of mightn't.
shouldened
Not English
Shouldened has no English definition. It may be misspelled.
mightened
English
Contraction
(
en-cont)
Mistaken re-analysis of mightn't.
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References
* Language Log
Related terms
* wouldened
* couldened
* shouldened