sulkuihin

Sulkuihin is a Finnish linguistic and typographical term that refers to the illative plural form of sulku, a noun that denotes a bracket, parenthesis, or other enclosure punctuation marks. In this sense, sulkuihin literally means “into the brackets” or “into the parentheses” and is used to indicate movement or placement toward these punctuation marks in written text. The form is most commonly encountered in grammar explanations, teaching materials, and style guides that discuss how to arrange content within or inside brackets.

Etymology and grammar: Sulku is the base noun meaning a bracket or enclosing mark. The illative case expresses direction toward a destination, and the plural illative form attaches a suffix that yields sulkuihin. This construction follows standard Finnish inflection patterns for illative plurals associated with nouns ending in the syllable structure of sulku. In practical use, sulkuihin signals to place or move material into the brackets rather than outside them.

Usage: Sulkuihin appears in instructional contexts describing where to position information, quotations, or clarifications. It is most often found in sentences that guide editors, writers, or students in structuring text with parentheses or brackets.

Examples:

- Lisää huomautus sulkuihin. (Add the note into the brackets.)

- Lainaus kirjoitetaan sulkuihin. (The quotation is written into the brackets.)

- Sijoita lisätiedot sulkuihin. (Place the additional information into the brackets.)

See also: Sulku, Sulut, Punctuation in Finnish, Illative case.