Sisällyttämään

Sisällyttämään is the third infinitive form of the Finnish verb sisällyttää, meaning to include or to incorporate. It is formed from the verb stem by adding the suffix -mään, yielding sisällyttämään. This form is a non-finite infinitive used in specific grammatical constructions rather than as a stand-alone finite verb.

The -maan/-mään infinitive, including sisällyttämään, is primarily used in conjunction with certain auxiliary verbs to express intention, future action, or planned inclusion. A common usage is with the auxiliary tule (to come) to form a periphrastic future: Tulen sisällyttämään tämän kohdan raporttiin. In addition, the third infinitive can appear in written Finnish in subordinate clauses where the action of including is referred to in a non-finite way. In everyday speech, the basic infinitive sisällyttää is more frequent, while sisällyttämään appears mainly in formal writing or in contexts that require the explicit third infinitive construction.

Morphology and spelling are straightforward: the form retains a double consonant (tt) and a final -maan/-mään suffix, reflecting its derivation from sisällyttää. The core meaning remains the same as the basic verb (to include), with the third infinitive serving a specialized grammatical role rather than a distinct lexical meaning.

In summary, sisällyttämään is the formal third infinitive of include, used in certain non-finite constructions—most notably with tule to express future intention—while sisällyttää remains the more common base infinitive in everyday language.