novercal
adjective
of, like, or befitting a stepmother.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
His father was a stern Anglican clergyman of extremely Protestant leanings, his mother died when Crashaw was young, but his stepmother appears to have been most unnovercal.
From A History of Elizabethan Literature by George Saintsbury