Because it indicates an action is done in a cautious (careful) manner. Many but not all words ending in -LY are used as adverbs.
The word "cautiously" is an adverb. It modifies a verb (e.g., walk cautiously) or another adverb or adjective (e.g., speak very cautiously).
most cautiously
The adverb is: "Cautiously"
The adverb form is "cautiously."
That is the correct spelling of the adverb "cautiously" (carefully).
Cautiously is an adverb. It modifies a verb.
No, it is an adverb.
Cautiously
The adverb forms are sadly and cautiously.
The adverbs are quite and cautiously.The adverb 'quite' modifies the adverb 'cautiously', which modifies the verb 'traveled'.
The adjective cautious has the adverb form cautiously. It means in a careful or cautious manner.
No, cautious is not an adverb. It is an adjective, with the adverb form "cautiously."