unknowingly

As an adverb unknowingly

is without awareness, without intent.

As an adjective undefined is

lacking a definition or value.

As adverbs the difference between willingly and unknowingly

is that willingly is of one’s own free will; freely and spontaneously while unknowingly is without awareness, without intent.

As adverbs the difference between unbeknownst and unknowingly

is that unbeknownst is (followed by to) without the knowledge of while unknowingly is without awareness, without intent.

As an adjective unknown

is not known; unidentified; not well known.

As a noun unknown

is (algebra) a variable (usually x'', ''y'' or ''z ) whose value is to be found.

As an adverb unknowingly is

without awareness, without intent.

As adverbs the difference between accidentally and unknowingly

is that accidentally is in an accidental manner; unexpectedly; by chance; casually; fortuitously while unknowingly is without awareness, without intent.

As adverbs the difference between unknowingly and unawares

is that unknowingly is without awareness, without intent while unawares is unexpectedly or by surprise.

As adverbs the difference between unconsciously and unknowingly

is that unconsciously is in a subconscious manner; something done unknowingly while unknowingly is without awareness, without intent.

As adverbs the difference between unknowingly and inadvertently

is that unknowingly is without awareness, without intent while inadvertently is unintentionally, because of an oversight.