Adjective intensification (-ísimo)

Extremely Good: The -ísimo Suffix

When you want to give a glowing review or emphasize a point, you could use muy (very). But to sound truly enthusiastic—to say something is extremely or super something—you can add the suffix -ísimo to the end of the adjective.

To form it, drop the final vowel of the adjective (a, o, or e) and add -ísimo. Remember that this new ending still needs to match the noun it describes in both gender and number (-ísimo, -ísima, -ísimos, -ísimas).

Spelling Changes

Sometimes, dropping the final vowel and adding -ísimo forces a spelling change to keep the original pronunciation of the word. For example, if an adjective ends in -co or -ca (like rico or simpático), the c changes to qu to maintain the hard "k" sound.