haastatteluin

Haastatteluin is a Finnish grammatical form that comes from the noun haastattelu, meaning interview. In linguistic terms, haastatteluin is the plural instrumental case form of haastattelu and is used to indicate the means by which something is done, specifically “by means of interviews” or “with interviews.”

The word is formed by combining the base haastattelu with the instrumental plural suffix -in, yielding haastatteluin. The singular instrumental form would be haastattelulla (with an interview), while haastatteluin refers to multiple interviews as the instrument of an action. This form is commonly used in formal or academic writing to describe data collection methods or sources obtained through interviews, often alongside other methods such as surveys or observations.

Usage notes: Haastatteluin is most frequently found in research descriptions within social sciences, journalism, and qualitative studies. It signals a methodological emphasis on interview-based data. It tends to appear in phrases that discuss how information was gathered, for example in statements like “tutkimus on tehty haastatteluin” (the study was conducted through interviews) or “aineisto kerätty haastatteluin ja kyselyin.” In more everyday Finnish, speakers might opt for the singular instrumental forms or more general phrases, but haastatteluin remains common in technical or formal prose.

See also: haastattelu, the noun for interview; instrumentaali (instrumental case) in Finnish grammar; data collection methods in qualitative research.