unintendedly

English

Etymology

From unintended +‎ -ly.

Adverb

unintendedly (comparative more unintendedly, superlative most unintendedly)

1. unintentionally
   • 2020 June 17, Andrew Roden, “Network News: Brake pipe issue prompted Caledonian Sleeper runaway”, in Rail, page 12:

     However, at a neutral section just after Curriehill station, the pantograph unintendedly dropped. This is believed to have prevented the Class 92's rheostatic brakes, which had provided most of the braking power until then, from working.