accidently

adv

Etymology: From Middle English accidently, accidentli (“by chance; temporarily; artificially”), equivalent to accident + -ly.

1. Accidentally; by chance, unintentionally.

   “[T]he exceptions remind me of an ingenious conjecture respecting Newton: that he was probably a being of a superior order, accidently caged in a human body.”

   “As I arrived at the foot of the hill I overtook two ladies, whom I passed. As I did so, I brushed one of them accidently on the arm.”