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Adjectives and Adverbs
Separate consecutive adjectives
with a comma.
As we mentioned earlier, if two or more adjectives provide
separate descriptions of the noun or pronoun, they
are called consecutive adjectives. Because they do not act
as a single unit to provide just one description of the noun,
they are not joined into a single unit with hyphens. Instead,
they are separated with a comma.
It was a clear, sunny day. (two descriptions
of day, clear and sunny)
He submitted a long, poorly written report. (two
descriptions of report, long and poorly written)
As you learned earlier, an easy way to decide whether you
should put a comma between two adjectives is to separate the
adjectives with the word and. If the word and makes
sense, and sounds right to you, put a comma between the adjectives.
Of course, you can leave the and between them if you
want; in that case, you should leave the comma out.
The new (,?) inexpensive information appliance.
"New and inexpensive information appliance" sounds
right, so we should put a comma between new and inexpensive:
The new, inexpensive information appliance. . .
His adjusted gross income. . .
"Adjusted and gross income" does not sound right,
so we should not put a comma between adjusted and