adresátm
Adresátm is not a standard or commonly recognized term in Czech linguistic usage. In most contexts it is encountered as a nonstandard or typographical variant of the noun adresát, meaning recipient or addressee. The base noun adresát is used to refer to a person to whom something is addressed.
In standard Czech, the word is declined in several cases and numbers, for example: nominative singular adresát;
Possible interpretations include a typographical slip for adresátům (the dative plural: to the recipients) or a
Conclusion: adresátm should be treated as nonstandard. When clarity is required, replace it with a standard