Definition of unrideably in US English:

unrideably

(also unridably)

adverb

  • So as not to be rideable.

Origin

Mid 19th century; earliest use found in Charles Kingsley (1819–1875), novelist, Church of England clergyman, and controversialist. From unrideable + -ly.

Pronunciation

unrideably

/(ˌ)ʌnˈrʌɪdəbli/