adjectives

Adjectives modify nouns. Small, black, knobby, impossible, peculiar, sticky, reprehensible are adjectives. There is a potentially infinite number of adjectives. Adjectives are normally used in their positive forms but may be inflected into comparative and superlative forms to indicate degree in relation to other objects. Some two-syllable adjectives and all adjectives with more than two syllables use more to form the comparative and most to form the superlative forms.

positive	comparative	superlative
tall	taller	tallest
grumpy	grumpier	grumpiest
indecisive	more indecisive	most indecisive

A few adjectives have irregular comparative and superlative forms:

positive	comparative	superlative
good	better	best
bad	worse	worst

Excerpted with permission from SAT Practice: The New Verbal Section.