-issa

-issa f (plural isses)

1. feminine singular of -ís
2. forms nouns from other nouns

   ‎hortal (“walled garden”) + ‎-issa → ‎hortalissa (“vegetable”)

   ‎rave (“radish”) + ‎-issa → ‎ravenissa (“wild radish”)

3. forms nouns from past participles

   ‎mesclat (“jumbled”) + ‎-issa → ‎mescladissa (“hodgepodge”)

   ‎volat (“flown”) + ‎-issa → ‎voladissa (“flock”)

Suppletive:

• In most forms, from Proto-Finnic *-t'ak (*-de-) (reflexive verb suffix).
• Forms containing -s- (except in the past tense) are analogically leveled from the past tense.
• The third-person singular endings derive from the paradigm of -ita.

The lengthening of the initial -i- in many verbs is a generalisation of the verbs whose stem originally ended in -i.

• (Ala-Laukaa) IPA^(key): /-isːɑ/, [-is̠ː]
• (Soikkola) IPA^(key): /-isːɑ/, [-iʃːɑ]

-issa (front vowel variant -issä)

1. Forms reflexive verbs.

   ‎näyttää (“to show”) + ‎-issa → ‎näyttiissä (“to appear”)

Verbs using this suffix belong to the laskiissa type, which see for an example.

• T. Lehtinen (1978), “Inkeroismurteiden refleksiivitaivutuksen kysymyksiä”, in Virittäjä, volume 82, issue 3

Borrowed from Ancient Greek -ισσα (-issa).

• (Classical) IPA^(key): /ˈis.sa/, [ˈɪs̠ːä]
• (Ecclesiastical) IPA^(key): /ˈis.sa/, [ˈisːä]

-issa f (genitive -issae); first declension

1. (Late Latin) Used to form feminine forms of masculine nouns.

First-declension noun.

• archimandritissa (from archimandrita)
• sacerdōtissa (from sacerdōs)

Borrowed from Latin -issa, or from Ancient Greek -ισσα (-issa).

• IPA^(key): /ˈi.sːa/ (Standard)

-issa

1. (Noun agent suffix) Used to form gentle feminine forms of masculine nouns.

• prufissurissa (from prufissuri)
• dutturissa (from dutturi)