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inadvertently

adv. by accident; without paying attention;

adj. inadvertent (without realizing what you are doing)

Syn. carelessly, accidentally

The reporters had inadvertently failed to include the name of one of the dignitaries.
His inadvertent calculation caused him to derive the wrong answer.  
In a panic, I inadvertently pushed the accelerator instead of the brake.

He inadvertently knocked over the bowl of flowers.
Viruses can be spread inadvertently by email users.
Robinson's name was inadvertently omitted from the list.
inadvertent exposure to chemicals.
an inadvertent mistake.