Vabatahtliku

Vabatahtliku is the genitive singular form of the Estonian word vabatahtlik, which can function as both an adjective meaning “voluntary” and a noun meaning “volunteer.” It is used to express association or possession with a following noun that is in the genitive case.

In use, vabatahtliku appears in phrases describing voluntary activities or organizations, where the head noun is in genitive. Examples include vabatahtliku töö, meaning “volunteer work”; vabatahtliku organisatsiooni liikmed, meaning “members of the volunteer organization”; and vabatahtliku tegevuse eesmärk, meaning “the purpose of the voluntary activity.”

Grammatically, vabatahtlik declines like an adjective; its genitive singular form is vabatahtliku, and the form is chosen to agree with the genitive noun it modifies. It should not be capitalized unless it begins a sentence.

Summary: Vabatahtliku is a common Estonian grammatical form used to denote a relationship to a volunteer or voluntary activity and appears frequently in official, educational, and NGO contexts.