Where does “amabilísimo” come from?

amabilísimo (Spanish) comes from Spanish -ísimo, from Latin -issimus, from Proto-Italic *-isəmos — forms superlative forms of adjectives.

Ancestry of “amabilísimo”, step by step

StepLanguageWordMeaning
1Spanish-ísimoAdded to adjectives to form the absolute...
2Latin-issimusadded to an adjective noun to form its...
3Proto-Italic*-isəmosforms superlative forms of adjectives
Every word from Proto-Italic *-isəmos →Every word from Latin -issimus →Every word from Spanish -ísimo →