-icu

Borrowed from Latin -icus.

• IPA^(key): /ˈiku/ [ˈi.ku]

-icu m sg (adjective-forming suffix, feminine singular -ica, neuter singular -ico, masculine plural -icos, feminine plural -iques)

1. -ic, -ical (of or pertaining to)

Originally variant of -ucu. Cf. Mirandese -ico.

-icu m sg (adjective-forming suffix, feminine singular -ina, neuter singular -ino, masculine plural -inos, feminine plural -iques)
-icu m sg (feminine singular -ica, masculine plural -icos, feminine plural -iques)

1. forms diminutives of nouns, adjectives, and adverbs

   ‎burru (“donkey”) + ‎-icu → ‎burricu (“little donkey”)

• Much less common than -ucu or -ín, somewhat more common in Western dialects, but uncommon overall.
• Like -ucu, it's more emphatic than -ín.