Some adjectives and adverbs have irregular comparative and superlative forms. The most common are:
Adjective/Adverb
good – bueno
bad – malo
great – grande
small – pequeño
well – bien
badly – mal
much – mucho
little – poco
Comparative
better –mejor
worse – peor
greater – mayor
less – menor
better – mejor
worse – peor
more – más
less – menos
Superlative
the best – el mejor
the worst – el peor
the greatest – el mayor
the least – el menor
best – el mejor
worst – el peor
most – el más
least – el menos
Note that the bueno and malo change according to gender and number while grande and pequeño change according to gender. The adverbs (the last four) do not agree with the noun.
Links
http://www.ielanguages.com/spanish3.html
Next: 052 Spanish Clothing
Word Document at: 051 Spanish Irregular Forms
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