Lukuisiin

Lukuisiin is a Finnish inflected form associated with the adjective lukuisa, meaning "numerous" or "many." In contemporary standard Finnish, the preferred illative plural form is lukuisiin. Lukuisiin is generally regarded as nonstandard or dialectal and is found in some regional varieties and older texts. It conveys the same basic meaning—direction toward or into many items—but its use is not common in modern formal writing.

Etymology and form: lukuisa derives from the root indicating quantity, with the illative plural suffix -iin forming lukuisiin in standard usage. Lukuisiin is a variant spelling that has appeared in dialectal speech and in historical examples, where vowel length and consonant combinations can differ from the standard form.

Usage and register: The form lukuisiin occurs mainly in regional speech and occasionally in older literary works. For most speakers and writers today, lukuisiin is the recommended form when expressing “to many” or “into many” items in the illative plural. If lukuisiin appears, it is typically interpreted as a nonstandard or dialectal variant rather than a mark of standard Finnish.

Examples:

- Nonstandard (dialectal): Lukuisiin kohteisiin suuntautuva retki sai laajan tuen.

- Standard: Lukuisiin kohteisiin suuntautuva retki sai laajan tuen.

See also:

- lukuisat, lukuisa, lukuisiin, illatiivi in Finnish grammar.