As a noun stemple
is (mining) a crossbar of wood in a shaft, serving as a step.
As an adjective semple is
simple; low-born; of mean birth.
semple
English
Antonyms
* gentle
References
* Oglivie, John. The Imperial Dictionary of the English Language: A Complete Encyclopedic Lexicon, Literary, Scientific, and Technological . Blackie & Son. (1884).