ammattitaitoisen

Ammattitaitoisen is a form of the Finnish adjective ammattitaitoinen, meaning professional, competent or skilled. The word is used to describe a person or expertise that demonstrates professional competence. It is formed from the stems ammatti (profession) and taito (skill) with the common adjectival suffix -inen, producing ammattitaitoinen. Like other Finnish adjectives, ammattitaitoinen inflects to agree with the noun it modifies.

The form ammattitaitoisen is the genitive singular of ammattitaitoinen. It appears in phrases where the described noun is in the genitive case, for example ammattitaitoisen työntekijän palkkaus (the pay/compensation of the skilled employee) or ammattitaitoisen henkilön osaaminen (the expertise of the skilled person). Other forms include nominative singular ammattitaitoinen, plural ammattitaitoiset, and genitive plural ammattitaitoisten. The adjective can also appear in the predicative position as ammattitaitoinen, e.g., Hän on ammattitaitoinen (He/She is professional).

Usage and nuance: ammattitaitoinen conveys a high level of professional competence and skill, and is common in formal writing, performance evaluations, and job descriptions. It is somewhat more formal than everyday synonyms such as osaava or pätevä. While it emphasizes skill and expertise, it does not by itself designate a specific profession; rather, it characterizes the skill level of a person or workforce.