That suffix originates from Latin.
Very quiet/soft. In Italian piano means soft and the -issimo ending increases the intensity of the word.
Bellissima, for a most beautiful female; bellissimo, for a most handsome male. The superlative of the adjective is formed by taking the Italian word bello, and adding the superlative ending -issima or -issimo.
pianissimo. Piano means quiet and forte means loud in Italian. Add -issimo and you have "a little more quiet" or a little more loudly.
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Moltissimo! is an Italian equivalent of the English phrase "very much!" The adverb merges the adverb molto ("a lot," "lots, "much") with the superlative suffix -issimo("most," "very"). The pronunciation will be "mol-TEES-see-mo" in Italian.
Very
The most is an English equivalent of the Italian suffix '-issimo'. The suffix also has a feminine equivalent in '-issima'. Either way, the suffix also may be translated as 'extremely, very'. The two forms are pronounced 'EES-see-moh' and 'EES-see-mah', respectively.
"Very fast" and "very quickly" are literal English equivalents of the Italian musical term prestissimo. The adverb in question combines the masculine singular adjective prestowith the suffix -issimo ("extremely," "very"). The pronunciation will be "preh-STEES-see-mo" in Italian.
Preghissimo in response to a thanks and invitatissimo in an invitation are Italian equivalents of the English phrase "You are most welcome."Specifically, the word preghissimo is formed by adding the suffix -issimo ("most, very") to prego. The pronunciation is "preh-GHEES-see-moh." The feminine form, preghissima, is pronounced "preh-GHEES-see-mah."The masculine adjective invitatissimo is formed by adding the suffix -issimo to invitato. The pronunciation is "EEN-vee-tah-TEES-see-moh." The feminine form, invitatissima, is pronounced "EEN-vee-tah-TEES-see-mah."
In Italian, Spanish, Portuguese, and Catalan; the form of an adjective formed by adding the suffixes -issimo, -isimo, -íssimo, -érrimo, -imo, or -íssim to the adjective (with any final vowel dropped) to express a superlative that cannot be exceeded, having the sense "as ... as possible".
"Super-flight" is an English equivalent of the Italian word volissimo. The masculine singular noun represents the combination of the masculine singular noun volo ("flight") and the superlative ending -issimo ("extremely," "most," "super," "ultra"). The pronunciation will be "vo-LEES-see-mo" in Italian.
"Most welcome" in terms of an invitation being extended is an English equivalent of the Italian word invitatissimo.Specifically, the masculine adjective invitatissimo is formed by adding the suffix -issimo to invitato. The pronunciation is "EEN-vee-tah-TEES-see-moh." The feminine form, invitatassima, is pronounced "EEN-vee-tah-TEES-see-mah."