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  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



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


  • IPA(key): /ˈisː, [ˈis̪ː]
  • Rhymes: -imo
  • Hyphenation: -ìs‧si‧mo


-issimo or -issima or -issimi or -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)
  2. 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)
  3. (often humorous) Added to some nouns to form extremes.
    poltrona (seat) + ‎poltronissima (front row seat) + ‎-issima → ‎benissimo
    finale (final) + ‎-issima → ‎finalissima (grand final)
  4. 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)

Usage notesEdit

  • Terms formed with this suffix are invariably stressed on the antepenult.
  • The adjectival suffix and the nominal suffix, the suffix -issimo are inflected by gender and by number (feminine -issima, masculine plural -issimi, feminine plural -issime).
  • 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 fastly
    velocissimissimamentevery very fastly
  • The stress of -issimo is always strongest than the stress of -mente.

Derived termsEdit





  1. superlative degree of