See also: -íssimo



(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)



  1. Added to an adjective, creates an adjective. This suffix is an intensifier which adds a qualifier of "extremely" or "remarkably."[1]


  1. ^ Interlingua Course for Beginners by Thomas Breinstrup



  • IPA(key): /ˈis.si.mo/
  • Rhymes: -issimo
  • Hyphenation: -ìs‧si‧mo

Etymology 1Edit

Borrowed from Latin -issimus. Compare Spanish -ísimo and Portuguese -íssimo which are partly based on the Italian forms.


-issimo (adjective-forming suffix, feminine -issima, masculine plural -issimi, feminine plural -issime)

  1. added to adjectives to form superlatives
    buono (good) + ‎-issimo → ‎buonissimo (as good as it gets, extremely good)
    grave (serious) + ‎-issimo → ‎gravissimo (very serious)
    consigliato (recommended) + ‎-issimo → ‎consigliatissimo (highly recommended)
    sconsigliato (not recommended, inadvisable) + ‎-issimo → ‎sconsigliatissimo (lowly recommended, highly inadvisable)
    primo (first) + ‎-issimo → ‎primissimo (very first)


-issimo (adverb-forming suffix)

  1. added to adverbs to form superlatives
    bene (well) + ‎-issimo → ‎benissimo (very well)
    spesso (often) + ‎-issimo → ‎spessissimo (very often)
    piano (softly) + ‎-issimo → ‎pianissimo (very softly)
    lentamente (slowly) + ‎-issimo → ‎lentissimamente (very slowly)
    velocemente (fastly) + ‎-issimo → ‎velocissimamente (very fastly)


-issimo m (noun-forming suffix, plural -issimi)

  1. (often humorous) added to some nouns to form extremes
    poltrona (seat) + ‎-issima → ‎poltronissima (front row seat)
    finale (final) + ‎-issima → ‎finalissima (grand final)
Alternative formsEdit

Usage notesEdit

  • Terms formed with this suffix are invariably stressed on the antepenult.
  • The adjectival and adverbial suffix can be used multiple times for emphasis, when the suffix is used multiple times it drops its last vowel except the last time:
    bellissimovery beautiful
    bellissimissimovery very beautiful
  • When the adverbal suffix is used together with the suffix -mente, the suffix -issimo becomes -issima and it is always before the suffix -mente:
    velocissimamentevery fast
    velocissimissimamentevery very fast
  • The stress of -issimo is always stronger than the stress of -mente.

Derived termsEdit

Etymology 2Edit


-issimo (non-lemma form of verb-forming suffix)

  1. added to the stem of verbs ending in -ire to form the first-person plural imperfect subjunctive tense
    salire + ‎-issimo → ‎salissimo (that we be raised, gone up, etc; that we have risen, gone up)





  1. superlative degree of