-sco

Inherited from Proto-Italic *-skō, from Proto-Indo-European *-sḱéti.

-scō (present infinitive -scere, perfect active -ī, supine -um); third conjugation

1. Forms inchoative verbs from existing verbs, meaning "to start to (verb), to begin to (verb)".

This suffix only forms the first principal part; the perfect and supine stems used vary according to the verb (e.g. adolēscō, adoluī, adultum).

• -ēscō
• -īscō

• Proto-Italic *iskō, Latin aerusco
• Proto-Italic *porskō, Latin posco
• Proto-Italic *gnōskō, Latin gnosco, nosco

• -asco, -esco, -isco, -izco, -usco, -uzco
• -sca, -asca, -esca, -isca, -izca, -usca, -uzca (for the noun)

Inherited from Late Latin -iscus.

• IPA^(key): /ˈsko/ [ˈsko]
• Rhymes: -o
• Syllabification: -sco

-sco (adjective-forming suffix, feminine -sca, masculine plural -scos, feminine plural -scas)

1. (sometimes derogatory) forms adjectives that signify relation to the word stem

   ‎príncipe (“prince”) + ‎-sco → ‎principesco (“related to princes”)

-sco m (noun-forming suffix, plural -scos)

1. forms augmentative nouns

   ‎peña (“rock”) + ‎-sco → ‎peñasco (“large rock, boulder”)

2. (Can we add an example for this sense?) forms collective nouns

• “-sco”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025