lisännyt

Lisännyt is the past active participle of the Finnish verb lisätä, meaning to add. It denotes that something has been added or that someone has performed an addition. In ordinary speech it commonly appears in compound tenses with the auxiliary olla, forming perfect constructions such as olen lisännyt (“I have added”) or hän on lisännyt (“he/she has added”), and it can also appear in pluperfect contexts.

Morphology and usage notes:

Lisännyt is derived from the verb lisätä with the participle suffix -nyt, which marks a completed, past action. As a participle, lisännyt can function within sentences as part of a verb phrase in perfect tenses. It is not a standalone finite form in everyday usage; its role is to convey that adding has already occurred. The related passive past participle lisätty means something has been added by someone, often used in passive constructions.

Related terms:

The root lisä- means addition or extra, and is the basis for several related words such as lisä (an addition, an extra) and lisäys (an addition or increase). Finnish also contrasts the active participle lisännyt with the passive lisätty, which emphasizes the action being done to the object rather than by the subject.

Examples:

Olen lisännyt kahviin sokeria. (I have added sugar to the coffee.)

Hän on lisännyt reseptiin uuden ainesosan. (He has added a new ingredient to the recipe.)

Se on lisännyt tuottoa viime kvartaalilla. (It has increased the return/profit in the last quarter.)

Lisännyt thus serves as a key marker of completed addition in Finnish morphology, closely tied to the verb lisätä and its semantic domain of increasing or adding.