Lisäädä

Lisäädä is not the standard Finnish infinitive for the verb meaning “to add.” The correct form is lisätä. In some contexts, lisäädä may appear as a misspelling or as a nonstandard variant in dialects or learner texts. The standard verb lisätä is widely used in everyday language, mathematics, cooking, and computing.

Grammatically, lisätä is a regular Finnish verb built on the stem lisä-. The infinitive lisätä is used after verbs of desire, intention, or in infinitive constructions, similar to other Finnish -tä verbs. Present tense forms include minä lisään, sinä lisäät, hän lisää, me lisäämme, te lisäätte, he lisäävät. The imperative mood commonly appears as lisää, meaning “Add!” in direct commands. The noun lisä meaning “an addition” or “a supplement” is closely related, and the related noun lisäys means “an addition, supplementation.” The past participle is lisätty, meaning “added.”

Usage and examples:

- Lisää kahviin maitoa. (Add milk to the coffee.)

- Hän lisää uuden rivin koodiin. (He adds a new line to the code.)

- Lisäys tarkoittaa, että jotakin extraa on tullut mukaan. (An addition means that something extra has been included.)

In computing and data contexts, the Finnish equivalent of “to add” is often described as appending or inserting an element, commonly expressed with lisätä or its participial forms in technical prose. Etymologically, lisätä derives from lisä, the root for “addition” or “extra,” connected to lisäys and related terms in Finnish.