un ‧ know ‧ ing /ʌnˈnəʊɪŋ $ -ˈnoʊ-/ BrE AmE adjective [only before noun]
[ Word Family: adjective : ↑ knowing , ↑ knowledgeable , ↑ known ≠ ↑ unknown ; noun : ↑ knowledge , the unknown; adverb : ↑ knowingly ≠ ↑ unknowingly , ↑ knowledgeably ; verb : ↑ know ]
formal not realizing what you are doing or what is happening SYN unaware
—unknowingly adverb :
She became ill after unknowingly taking an illegal drug.