unwittingly, inadvertently, unknowingly
Meaning: without knowledge or intention; "he unwittingly deleted the references"
I was too much taken by surprise to apologize for my trees, but felt reproached; unwittingly I had destroyed the old captain's choicest pleasure.
She regretted that he had spoken as he had and he, too, regretted it almost instantly as he saw the shadow cross her face and realized that he had unwittingly added to the difficulties of her already almost unbearable situation.
But at the hour when gladsome dawn shines from heaven, rising from the east, and the paths stand out clearly, and the dewy plains shine with a bright gleam, then at length they were aware that unwittingly they had abandoned those men.