ísimo, a, os, as : adding a sense of very :extremely, super, very, exceptionally emphasizes the adj.
Las reglas grandísimo grande + ísimo 1. If the adjective ends in a vowel : drop the vowel before adding the ending: grande + ísimo grandísimo
Las reglas malísimo mal + ísimo 2. If the adjective ends in a consonant : simply add the ending to the singular form mal + ísimo malísimo
Spelling Changes c g qu gu c occurs when the adjective ends with : c, g or z (after taking off end vowel) c g z qu gu c
Spelling Changes rico largo feroz riquísimo larguísimo ferocísimo occurs when the adjective ends with : c, g or z (sometimes after taking off end vowel) rico largo feroz riquísimo larguísimo ferocísimo
Make sure the ending of ísimo agrees with the noun it is describing. ísimo/a/os/as Las montañas son altísimas.
Accents All other accents will drop. fácil facilísimo The tilde (ñ) will stay. pequeñopequeñísimo