-llinen

Adjectives with -llinen

Level 4

The suffix -llinen is a powerful tool in Finnish word formation. It attaches to noun stems to create adjectives that describe qualities (like onnellinen - happy) or relationships (like taloudellinen - economic).

How It Works

The -llinen suffix is a versatile tool for creating adjectives and nouns of measure. It serves three main purposes:

1. Qualitative: It indicates that something is characterized by the base noun. For example, vaara (danger) becomes vaarallinen (dangerous).
2. Relational: It describes a connection to a field or category. For example, kunta (municipality) becomes kunnallinen (municipal).
3. Measure/Quantity: It creates nouns indicating the amount a container holds. For example, lusikka (spoon) becomes lusikallinen (a spoonful).

-inen vs. -llinen: While both create adjectives, -inen often denotes material or origin (e.g., puinen - wooden), whereas -llinen denotes a quality, property, or relation (e.g., kunnallinen - municipal).

Morphological Rules
For the common examples here, take the singular genitive without -n and add -llinen: kunta : kunnan → kunnallinen, tiede : tieteen → tieteellinen, lapsi : lapsen → lapsellinen, and onni : onnen → onnellinen. This useful pattern is not a license to create any adjective mechanically: established derivatives can have specialized meanings and stem shapes.

For case endings, -nen has a singular vowel stem in -se-: onnellise-ssa. Other forms use different stems, including onnellista and plural onnellisia. The neutral vowels of -llinen do not change the base word’s harmony: vaarallisessa but järjellisessä.

Related Word Families
Time-related derivatives include ajallinen (temporal) and hetkellinen (momentary). To form an adverb, attach -sti to the -se- stem: onnellinen → onnellisesti (happily). Abstract nouns include onnellisuus (happiness). The caritive suffix -ton/-tön forms useful contrasts such as onnellinen – onneton and vaarallinen – vaaraton, but not every -llinen word has a routine direct opposite.

Further Connections

  • vowel harmony: The suffix itself contains neutral vowels and does not alternate, but it is transparent to the vowel harmony of the root word when adding further case endings.

Examples (6)

  1. Hän on erittäin onnellinen mies.

    He is a very happy man.

    Word by Word: He is very happy man.

    Derived from 'onni' (happiness). Note the i to e change in the stem.

  2. Tämä on vaarallinen tie talvella.

    This is a dangerous road in winter.

    Word by Word: This is dangerous road in-winter.

    Derived from 'vaara' (danger). The suffix adds the quality of being 'full of danger'.

  3. Kunnallinen päätöksenteko vie aikaa.

    Municipal decision-making takes time.

    Word by Word: Municipal decision-making takes time.

    Derived from 'kunta' (municipality). Notice how the 'nt' weakens to 'nn' due to consonant gradation.

  4. Lisää taikinaan yksi lusikallinen sokeria.

    Add one spoonful of sugar to the dough.

    Word by Word: Add to-dough one spoonful sugar.

    Here -llinen forms a noun of measure from 'lusikka' (spoon). Note the 'kk' to 'k' consonant gradation.

  5. Lapsellinen käytös ei sovi aikuiselle.

    Childish behavior does not suit an adult.

    Word by Word: Childish behavior not suit for-adult.

    Derived from 'lapsi' (child). Note the i to e change (lapse-).

  6. Tämä on tavallinen suomalainen koti.

    This is an ordinary Finnish home.

    Word by Word: This is ordinary Finnish home.

    Derived from 'tapa' (custom/habit). The 'p' weakens to 'v' because of consonant gradation.

Common Mistakes

  • Using the wrong stem vowel for -i ending nouns.

    Hän on onnillinen.
    Hän on onnellinen.

    Old Finnish nouns ending in -i must change to -e before adding -llinen. 'Onni' becomes 'onnellinen', not 'onnillinen'.

  • Confusing -llinen with -llainen.

    Tämä on vaarallainen tie.
    Tämä on vaarallinen tie.

    The suffix -llainen/-lläinen means 'like' or 'sort of' (e.g., 'tällainen' - like this), whereas -llinen describes a specific quality. Note that 'vaarallainen' is a common misspelling of 'vaarallinen'.

  • Forgetting consonant gradation in the stem.

    Se on kuntallinen asia.
    Se on kunnallinen asia.

    Use the stem found in kunnan: kunna- + -llinen → kunnallinen. Do not attach the suffix directly to the nominative kunta.

How It Connects

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-llinenLevel 4Adjectives with -llinen

Learn This First

To understand the -llinen suffix, you need to know how to form noun stems and apply vowel harmony to the suffix. Additionally, since this pattern creates adjectives, you should be familiar with how adjectives behave in Finnish sentences.

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-llinen