What is the meaning of Sieren?

to adorn, to decorate

to befit, to be appropriate for

to be nice of, to be decent of

inflection of sierer:

1. accusative masculine singular
2. dative plural

accusative masculine singular

dative plural

inflection of sier:

1. accusative masculine singular
2. dative plural

accusative masculine singular

dative plural

Source: wiktionary.org