What is the adverb for attacked?

Answer 1

The adjective "attacked" does not have a regularly-used adverb (i.e. attackedly, attackingly, and attackably do notexist).

There can be any number of adverbs for "attacked". Two examples are harshly and suddenly.

Answer 2

The word 'attacked' is the past participle, past tense of the verb to attack.

The word attack is also a noun as a word for a physical or verbal assault; an initial movement in a task or undertaking; an episode or onset of a disease, a feeling, a need, a desire (an attack of hunger, an attack of guilt).

The noun forms for the verb to attack are attacker and the gerund, attacking.

Answer 3

No, it is not an adverb. Attacking is a verb form and gerund (noun), and can be used as an adjective. The adverb form does not exist.