In conclusion, while "can hardly" is universally accepted and used to express difficulty or a negative ability, "can't hardly" is generally considered incorrect in standard English but is used in some informal contexts. Adhering to standard grammar rules, "can hardly" is the safer and more universally accepted choice for expressing that something is difficult or barely possible.
Dialect and informal speech. In some regional dialects or casual conversations, people use double negatives for emphasis. Think of songs or movies where you hear “I don’t got none” or “You ain’t seen nothing yet.” is it can hardly or can't hardly
Is it or “can’t hardly” ?
“Can’t hardly” is incorrect in standard English. In conclusion, while "can hardly" is universally accepted
Why? It comes down to one simple rule: