kiitollisia
Kiitollisia is a Finnish adjective form meaning grateful or thankful. It describes people who feel or express gratitude. The base noun kiitollisuus denotes the feeling of gratitude, while kiitollinen and its inflected forms (including kiitollisia) are used to describe the subject: for example, "Olemme kiitollisia" means "We are grateful."
Grammatically, kiitollinen is an adjective, and kiitollisia is the plural partitive form used in predicative constructions
Usage and nuance: kiitollisia expresses a positive evaluation of actions received, such as help, support, or
Relation to kiitollisuus: kiitollisuus is the noun form that names the feeling of gratitude, while kiitollisia