This is the 6882nd most frequent Spanish word.
denys
"Denys" is not a standard Spanish word. It may be a name or misspelling.
Here, 'Denys' is used as a proper noun, a common name.
Denys juega al fútbol los sábados.
Denys plays football on Saturdays.
In this context, 'denys' is a fictional conjugation of the verb 'denegar', which does not exist in standard Spanish. It shows an incorrect usage.
Ella siempre denys que ha roto el jarrón.
She always denies breaking the vase.
Here, 'Denys' is again used as a proper noun, indicating possession (a possessive apostrophe would be in English).