kuukausittaisella

Kuukausittaisella is a Finnish inflected form of the adjective kuukausittainen, meaning monthly. It is the adessive singular form and is used to modify a noun in the adessive case to express that something is arranged or occurs on a monthly basis.

In Finnish, adjectives agree with the nouns they modify in case and number. Kuukausittainen describes frequency or timing, and kuukausittaisella specifically marks the adessive case, usually translated as “on a monthly …” or “with monthly …” depending on the noun it accompanies. This form is distinct from the adverb kuukausittain, which simply states that something happens monthly without tying it to a particular noun.

Common contexts for kuukausittaisella include business, finance, and administration, where actions are described as being carried out on a monthly basis or under a monthly arrangement. Examples include phrases such as kuukausittaisella laskutuksella (with monthly invoicing) or kuukausittaisella tilauksella (on a monthly subscription/order). The construction allows speakers to specify the manner in which something is provided or organized, while the noun remains in the adessive form.

Related forms include kuukausittainen (the basic nominative adjective meaning “monthly”) and kuukausittain (the adverb meaning “monthly”). Understanding kuukausittaisella involves recognizing the broader Finnish system of adjective declension and how the adessive case alters the form to fit the noun it describes. See also: kuukausittainen, kuukausittain.