romlásának
Romlásának is a Hungarian grammatical form that belongs to the genitive of the abstract noun romlás, meaning decay, deterioration or decline. It denotes possession or attribution, roughly translating to “of its decay/decline.” The suffix -ának (or -ének, depending on vowel harmony) marks the third-person possessive in the genitive, attaching to romlás to show that the thing described is undergoing decay or decline.
In usage, romlásának typically appears in noun phrases that relate a subject to its deterioration. For example,
The form contrasts with other cases of the same noun, such as romlását, which is the accusative
See also: romlás, possessive and genitive constructions in Hungarian grammar, examples of genitive usage in Hungarian