Modifying verbs, adjectives, or other adverbs.
- Modifying verb: "The girl ran quickly."
- Modifying adjective: "The cake tasted extremely delicious."
- Modifying adverb: "Julia ran extremely quickly."
Adverb
Yes, thankfully we can use it as an adverb. It is the adverb form of the adjective thankful.
You would have to use one of the adverb forms "thoughtfully" or "thoughtlessly."
(You would have to use the adverb, which is tenderly.) She touched his face tenderly.
Formulaically is the adverb form of formula.
As an adverb .
no
Like this: I did my history homework yesterday. That's how you use yesterday as an adverb in a sentence
In the English language, "fire" has no adverb form.
The adverb would be "inalienably." But it would have very limited use.
Adverb: I had a hat on. Preposition: I didn't have any money on me.
As your question indicates, "entirely" is an adverb; it doesn't need an additional suffix.