Answer:
Hot.
Step-by-step explanation:
Hi, adverbs are words used to modify words like verbs and adjectives.
Adverbs also can tell the extension of an action, or intensify the meaning of a word.
For example:
They opened a window because the room was too hot.
The adverb too intensifies the word hot.
Feel free to ask for more if needed or if you did not understand something.