Question

In the following sentence, which word is the adverb?
"The cake looked too good to eat."

Answer 1

Adverbs typically end in -ly but in this case the word should be "too"

Answer 2

The answer is: too

Step-by-step explanation:

Let's remember that an adverb modifies a verb or an adjective. These words provide context, we normally spot an adverb as many of them end in -ly, however, there are lots of them which don't precisely follow "this rule", the example here is "too" which in this context means: a lot, very much, to excess... and it is modifying the adjective (descriptive word) good, it is intensifying it. The other words are simply verbs, nouns, etc..